|Maintained by FDOT|
|Length:||132.298 mi (212.913 km)|
|Existed:||1957 – present|
|West end:||I‑275 in Tampa|
|East end:||I‑95 / SR 400 in Daytona Beach|
|Counties:||Hillsborough, Polk, Osceola, Orange, Seminole, Volusia|
Interstate 4 (I-4) is a 132.298-mile (212.913 km) intrastate Interstate Highway in the US state of Florida, along a southwest-northeast axis from I-275 in Tampa, Florida to I-95 at Daytona Beach, Florida. The entirety of Interstate 4 overlaps nearly the entirety of State Road 400 (SR 400), which extends as a contiguous, signed 4.216-mile (6.785 km) surface street in Daytona Beach from Interstate 95 to US 1 (SR 5). Interstate 4 has no auxiliary interstate highway spurs or loops; however, it intersects several tolled expressways—designated as state roads—that serve as spur and partial loop routes in the Orlando metropolitan area, which (unlike most major U.S. cities) lacks any auxiliary interstate highways.
The first segment of Interstate 4 opened to traffic in 1959 and the highway was largely completed by the late 1960s. Interstate 4's original western terminus was in St. Petersburg, but in 1971 the highway segment from St. Petersburg to its present terminus at I-275 was redesignated as part of Interstate 75 before being redesignated again as I-275. The median of I-4 between Tampa and Orlando was the planned route of a high-speed rail line between these cities, which was cancelled in 2011. The "I-4 corridor" is a strategic region in politics, due to the large number of undecided voters in a large swing state.
||This section may require copy editing for the overusage of exit numbers and to enhance flow. (August 2014)|
I-4 maintains a diagonal, northeast–southwest route for much of its length, although it is signed east–west.
The 132-mile (212 km) highway's western terminus is with an interchange with I-275—known as "Malfunction Junction"— near downtown Tampa and is the starting point for mile markers and exit numbers (which are mileage-based). Just east of Malfunction Junction, I-4 passes along the north side of Tampa's Ybor City district (exit 1), where a mile-long connector (exit 2) links to the Lee Roy Selmon Expressway (Toll SR 618) and Port Tampa Bay. I-4 continues east past the Florida State Fairgrounds towards a turbine interchange (uncommon in the U.S.) with I-75.
After passing near the eastern suburbs of Hillsborough County—including Brandon and Plant City—it enters Polk County, where I-4 crosses along the north side of Lakeland. The Polk Parkway (Toll SR 570) forms a semi-loop through Lakeland's southern suburbs and returns to I-4 at the Florida Polytechnic University campus, near Polk City; it does not serve as a bypass route for I-4 traffic. Just after the western junction with the Polk Parkway, I-4 turns from an eastward to a northeastward heading. Between exits 38 & 55, I-4 passes through the fog-prone Green Swamp, although the landscape beside the highway is mostly forest as opposed to water-logged swampland. Ten variable-message signs and dozens of cameras & vehicle detection systems monitor this stretch of mostly-rural highway as a result of several large, deadly pile-ups caused by dense fog. 
At mile 57, I-4 enters Osceola County and soon thereafter intersects the Orlando area's beltways: the incomplete Western Expressway (Toll SR 429; exit 60) on the western side and the Central Florida GreeneWay (Toll SR 417; exit 62) which rounds the eastern side before returning to I-4 in Sanford (exit 101B). Additionally, Exit 62 has ramps to World Drive which runs north as a limited-access highway into the Walt Disney World Resort. Exit 62 also marks an abrupt change from rural to suburban/urban landscape, although a small amount of suburban landscape is visible around exits 55 & 58-60. The highway passes beside Celebration and Kissimmee on the east side and Walt Disney World Resort (not visible) on the west side.
From approximately exits 62-104, I-4 passes through the Orlando metropolitan area, where the highway forms the main north-south artery. It passes close to the three major theme parks—Disney World (exits 62-65), SeaWorld Orlando (exit 71), & Universal Orlando (exits 74B & 75)—and intersects all of the areas major toll roads, including the Beachline Expressway (Toll SR 528; exit 72) and Florida's Turnpike (exit 77). Orlando's main tourist strip—International Drive—runs parallel and no more than 1.5 mi (2 km) from I-4 between Kissimmee and Florida's Turnpike. After exit 81A, I-4 changes to a north heading past downtown Orlando and northern suburbs. A 21-mile (34 km) section of I-4 from roughly miles 75-96 will undergo a $2.3 billion makeover beginning in winter 2014-15 that includes the addition of two express toll lanes—named 4 Express—in each direction.
After passing along the west side of Downtown Orlando (exits 82A-83A), I-4 continues through the city's northern suburbs—including Winter Park(exits 87 & 88), Maitland (exit 90), Altamonte Springs (exit 92), and Sanford (exits 101C & 104). Around mile 91, I-4 enters Seminole County and soon thereafter shifts to a northeast heading. The Seminole Expressway (SR 417), after passing around the east side of the Orlando metropolitan area, has its northern terminus (exit 101B) at I-4 in Sanford. This intersection will also connect with the Wekiva Parkway (SR 429), currently under construction, when it is completed in 2021, at which point a full beltway (SR 429 & SR 417; concurrent with I-4 for 2 mi) around the Orlando metro area will be available.
North of Sanford, I-4 is carried by the St. Johns River Veterans Memorial Bridge (near mile 104) over the St. Johns River at the mouth of Lake Monroe. Along the bridge, I-4 enters Volusia County and passes Deltona (exits 108-114) & DeLand (exits 114-118). The segment north of SR 44 (exit 118) is being widened from four to six lanes; when completed in 2015, the entire length of I-4 will have 6 or more lanes (3+ per direction). I-4 terminates at a junction with I-95 (mile 132) in Daytona Beach. SR 400 (exit 132) continues east into Daytona Beach 4 mi to US 1.
I-4 has two pairs of rest areas, one near Winter Haven and the other near Longwood. At each location, there are separate facilities on opposite sides of the freeway, providing services to traffic in both directions. The rest areas all provide handicapped facilities with restrooms, picnic tables, drinking water, pet exercise areas, outside night lights, telephones, vending machines and nighttime security.
FDOT closed a pair of rest areas at the Daryl Carter Parkway overpass (mile 70) near Lake Buena Vista in early 1999 and replaced them with retention ponds to serve runoff from an additional lane in each direction of I-4. Another former rest area, without any bathrooms, existed on the eastbound side near milepost 127 in Volusia County.
A pair of weigh stations including weigh in motion scales is present at mile 12 between Tampa and Plant City. They were opened in January 2009 to replace a pair just west of the SR 566 interchange at mile 19.
|This section needs additional citations for verification. (August 2007)|
I-4 was one of the first Interstate Highways to be constructed in Florida, with the first section opening between Plant City and Lakeland in 1959. By early 1960, the Howard Frankland Bridge was opened to traffic, as well as the segment from the Hillsborough Avenue/US 301 junction in Tampa to Plant City. The stretch from Lake Monroe to Lake Helen, including the original St. Johns River Bridge also opened during that period. The segment from Tampa to Orlando was complete by 1962. By the mid 1960s, several segments were already complete, including Malfunction Junction in Tampa and parts of I-4 through Orlando. The original western terminus was set at Central Avenue (County Road 150) in St. Petersburg, though a non-Interstate extension would have continued south and west to Pasadena. Proposed I-4 was later extended southwest to the present location of exit 20, with a planned temporary end at US 19 and 13th Avenue South, and a continuation to the Sunshine Skyway was also designated as part of Interstate 4. Construction was stalled at 9th Street North (CR 803) for several years.
The entire Interstate Highway was completed by the late 1960s; however, the western terminus was truncated to Malfunction Junction in 1971 when I-75 was extended over the Frankland Bridge. Eventually, that stretch was again redesignated to become part of I-275.
In maps and atlases dating to the 1950s, 1960s, and 1970s, the Tampa–St. Petersburg section of I-4/I-275 was marked as the Tampa Expressway. The Orlando segment was marked as the Orlando Expressway. Both names have since faded from maps.
Although many post-1970 interchanges along I-4 were constructed before the recent widening projects, they were designed with I-4 expansion in mind. In other words, there is enough room available to widen I-4 to up to ten lanes without extensively modifying the interchanges. Some of these interchanges include the I-75 stack (constructed in the 1980s) and several interchanges serving the Walt Disney World Resort (constructed in the late 1980s and early 1990s).
A section of I-4 between Daytona Beach and Orlando called the "dead zone" is rumored to be haunted. In 2010, the ECFRPC using GIS technology performed an analysis to determine if this identified zone had an increased fatality rate related to crashes. The analysis which compared this section of I-4 to several other dangerous I-4 sections found that while the dead zone area did not have the highest accident or fatality rate, it did identify that the percentage of fatality to accident was significantly higher in this location. In other words, while you are not more likely to be in accident in this section of I-4, if an accident occurs the chance of that accident containing a fatality is greatly increased.
The median of I-4 between Tampa and Orlando was slated to be used for the Florida High Speed Rail line between those cities. As a result of a state constitutional amendment to build a high speed rail system between its 5 largest cities passed by voters in 2000, construction projects on I-4 included a wide median to accommodate a high speed rail line. The high speed rail project was cancelled in 2004, but revived again in 2009. In 2010, the federal government awarded Florida over $2 billion—nearly the entire projected construction cost—to build the line, with work on the project to begin in 2011 and be completed by 2014.
The I-4/I-275 interchange (Malfunction Junction) was rebuilt from 2002 to 2007, and I-4 has been widened from four to six lanes (with eight lanes in certain segments). Eventually, I-4 will be widened again to a total of at least ten lanes (five in each direction). Studies for this project are already underway and construction should commence sometime in the 2010s. Completion of the project should be around 2020.
Eastbound I-4 shifted to its new, permanent alignment between Malfunction Junction and 50th Street on August 8, 2006. The new alignment includes a right-lane ramp exit/entry at the 22nd St/21st St Interchange (The previous left-lane configuration was causing hazardous conditions to commuters since its opening in 2005). On August 11, 2006, a fourth lane opened on eastbound I-4 between the downtown junction and 50th Street (led in by a newly opened third lane on the eastbound I-4 ramp from northbound I-275). And on August 18, the new westbound alignment, just west of 50th Street, opened. The newly opened lanes will improve flow throughout the interchange. The 50th Street overpass however, would not be complete until late 2007. Also, the eastbound I-4 exit ramp to Columbus Drive/50th Street is situated to the left-hand side of the highway (as opposed to its former right-hand side exit). This exit shift went into effect in spring 2006 and is part of the new, permanent interstate configuration.
In Tampa, the exit to 40th Street (SR 569), exit 2, was closed and demolished in late 2005 due to the ongoing reconstruction of I-4 and to accommodate a proposed connector highway with the Lee Roy Selmon Expressway.
The interchange with what is today I-75 was constructed in the early 1980s.
As Orlando grew in the 1970s and 1980s, traffic became a growing concern, especially after the construction of the original interchange with the East–West Expressway in 1973, which proved to become a principal bottleneck. The term "highway hostages" was coined in the 1980s to describe people stuck in long commutes to and from Orlando on I-4.
In the early-to-mid 1990s, several interchanges near Kissimmee were constructed or upgraded to accommodate increasing traffic going to and from Walt Disney World. However, I-4's main lanes were not widened in the process. Around the same time, SR 417 was extended to I-4. Improvements to the US 192 junction were completed in 2007.
During the early 2000s, tolled express lanes were being planned in the Orlando area as a traffic congestion relief technique for rush hour commuters. The name for them was to be Xpress 400, numbered after the state road designation for I-4. The express lanes were slated to extend from Universal Orlando, east to SR 434 in Longwood, and tolls were to be collected electronically via transponders like SunPass and Orlando-Orange County Expressway Authority's E-Pass, with prices dependent on the congestion of the eight main lanes. However, the project was effectively banned by the passage of the SAFETEA-LU Federal transportation bill in 2005, introduced by U.S. Representative John Mica. The plan for tolled express lanes, however, is still in the long term plans for I-4. The project has since been approved as part of the $2.3 billion "I-4 Ultimate" project (see "Future" section below).
Interim improvements to the interchange at SR 408 were completed at the end of 2008.The eastbound exit to Robinson Street (SR 526) permanently closed on April 25, 2006, to make way for construction of the new eastbound onramp from SR 408. The westbound offramp to Gore Street was permanently closed in the same project on November 2, 2008.
On January 9, 2008, 70 vehicles were involved in a large pileup on I-4 near Polk City. The pileup was caused by an unexpected thick morning fog that was mixed with a scheduled—and approved—environmental burn by the Florida Wildlife Commission. The fog drifted across I-4, mixing with the smoke, reducing visibility to near-zero conditions. Four people were killed, and 38 were injured. The section of I-4 did not re-open until the next day, January 10.
|2012||52.6% 953,186||46.2% 838,377||1.2% 21,907|
|2008||53.3% 946,929||45.7% 811,159||1.0%% 17,034|
|2004||46.5% 724,618||52.9% 824,887||0.6% 9,929|
|2000||48.0% 569,746||49.7% 590,030||2.2% 26,531|
|1996||45.7% 462,403||44.7% 451,902||9.6% 96,818|
|1992||37.5% 379,821||42.1% 426,297||20.3% 205,621|
In the 2004 U.S. presidential election, the I-4 corridor, a commonly used term to refer to the counties in which Interstate 4 runs through and a site of significant population growth, was a focus of political activity within the swing state of Florida. Communities along the I-4 corridor were perceived by both major political parties as having higher proportions of undecided voters as compared to more Republican- or Democratic-leaning portions of the state. It played an equally key role in the 2008 U.S. presidential election, but whereas the corridor had voted heavily for George W. Bush in 2004, which helped Bush win the state, in 2008 it swung behind Democratic candidate Barack Obama, helping Obama win Florida. The I-4 corridor has voted for the statewide winner since at least 1992, but has supported the national winner since 1996. The Republicans and Democrats have each carried the region three times in the past six presidential elections. Republicans George H. W. Bush and George W. Bush won more votes than other candidates in 1992, 2000, and 2004 while Democrats Bill Clinton and Barack Obama captured the regions vote total in the elections of 1996, 2008, and 2012.
The final four-lane segment of I-4, from SR 44 to I-95, is being widened to six lanes. When completed in summer 2015, the entire length of the highway will be six or more lanes wide.
In 2014, the Florida Department of Transportation began a study of the feasibility of extending the SunRail commuter train line to Daytona Beach, primarily focusing on the use of the I-4 median. The ongoing widening project from SR 44 to I-95 maintains a median wide enough to accommodate a future rail line.
A $2.3 billion project dubbed "I-4 Ultimate" will reconstruct 21-mile (34 km) of I-4 through Orlando from SR 435 (exit 75) east to SR 434 (exit 94). The most noticeable improvement will be the addition of four variable-toll express lanes along this section, to be called 4 Express. The express lanes will be variably tolled in an attempt to maintain an average speed of 50 miles per hour. Additionally, the general use lanes will be rebuilt, 15 major interchanges will be reconfigured, and 75 bridges will be replaced. On April 23, 2014, FDOT selected a firm to construct the ultimate improvements. Construction is scheduled to begin in 2015 and end in 2021. 
|County||Location||Mile||km||Old exit||New exit||Destinations||Notes|
|Hillsborough||Tampa||0.000||0.000||—||—||I‑275 (SR 93) – St. Petersburg, Ocala, Tampa International Airport||Westbound splits into 3 ramps: Northbound & southbound I-275 and "Exit 45A" (in reference to the I-275 exit number)/"Downtown East-West", which joins the southbound I-275 Exit 45A ramp without joining the southbound I-275 mainline.|
|1.154||1.857||1||1||SR 585 (22nd Street / 21st Street) – Cruise Ships|
SR 618 (Selmon Expressway) / US 41 Bus. (20th Street) – Brandon, Port Tampa Bay
|I-4–Selmon Expressway Connector (left exits, both directions); access to or from SR 618 only in the same direction; US 41 BUS (trucks only, signed only as "Port Tampa Bay") access from westbound I-4 and to eastbound I-4|
|2.463||3.964||2||2||SR 569 (40th Street)||Former interchange|
|3.266||5.256||3||3||US 41 (50th Street / SR 599) / Columbus Drive||Eastbound left exit and westbound left entrance; eastbound right entrance and westbound left entrance|
|4.706||7.574||4||5||SR 574 (Martin Luther King Jr. Boulevard)|
|5.573||8.969||5||6||Orient Road||Eastbound exit and westbound entrance|
|6.683||10.755||6||7||US 92 (Hillsborough Avenue / SR 600) / US 301 (SR 41) – Riverview, Zephyrhills, Busch Gardens|
|8.610||13.856||7||9||I‑75 (SR 93A) – Ocala, Naples||Uncommon turbine interchange.|
|Mango||10.142||16.322||8||10||CR 579 (Mango Road) – Mango, Thonotosassa|
|17.434||28.057||10||17||Branch Forbes Road||Serves Dinosaur World|
|Plant City||19.518||31.411||11||19||SR 566 (Thonotosassa Road)|
|21.280||34.247||13||21||SR 39 (Alexander Street) / CR 39 (Buchman Highway)||Alexander Street was originally exit 12, but was combined with 13|
|22.596||36.365||14||22||Park Road (SR 553)|
|Hillsborough–Polk county line||Lakeland||25.563||41.140||15||25||County Line Road|
|Polk||26.530||42.696||15A||27||SR 570 east (Polk Parkway) – Lakeland, Winter Haven, Bartow|
|28.365||45.649||16||28||To US 92 (SR 546/Memorial Boulevard) – Lakeland|
|30.675||49.367||17||31||SR 539 (CR 35A north/Kathleen Road) – Kathleen, Lakeland|
|32.003||51.504||18||32||US 98 (SR 35 / SR 700) – Lakeland, Dade City|
|33.440||53.816||19||33||SR 33 (Lakeland Hills Boulevard) / CR 582 (Socrum Loop Road) – Lakeland||Eastbound exit/entrance with SR 33 only (signed "SR 33"); westbound exit/entrance with CR 582 only (signed "CR 582"/"To SR 33")|
|41.223||66.342||20A||41||SR 570 west (Polk Parkway) – Auburndale, Lakeland||Serves Florida Polytechnic University (southwest corner of interchange).|
|43.981||70.781||21||44||SR 559 – Polk City, Auburndale||Serves Fantasy of Flight|
|Polk County Rest Area|
|47.982||77.220||22||48||CR 557 (Old Grade Road) – Lake Alfred, Winter Haven|
|54.733||88.084||23||55||US 27 (SR 25) – Haines City, Clermont|
|Osceola||57.723||92.896||24||58||CR 532 (Champions Gate Boulevard/Osceola-Polk Line Road) – Poinciana, Kissimmee|
|59.663||96.018||—||60||SR 429 north (Western Expressway) – Apopka|
|Celebration||61.781||99.427||24C-D-E||62||SR 417 north (Central Florida GreeneWay) – Disney World, Celebration, International Airport, Sanford||Collector/distributor lanes serve two junctions with one exit. Full interchange with World Drive. Eastbound exit to SR 417. Westbound entrance from SR 417.|
|64.165||103.264||25A-B||64||US 192 (SR 530/Irlo Bronson Memorial Highway) – Kissimmee, Magic Kingdom|
|65.322||105.126||26C–D||65||Osceola Parkway (CR 522) – Animal Kingdom, Wide World of Sports|
|Orange||66.565||107.126||26A-B||67||SR 536 (Epcot Center Drive/World Center Drive) to SR 417 – Epcot, Downtown Disney|
|Lake Buena Vista||68.107||109.608||27||68||SR 535 – Kissimmee, Lake Buena Vista|
|70.983||114.236||27A||71||Sea World (Central Florida Parkway)||Eastbound exit and westbound entrance|
|71.744||115.461||28||72||SR 528 east (Beachline Expressway) – International Airport, Cape Canaveral|
|73.732||118.660||29A||74A||SR 482 (Sand Lake Road) / International Drive|
|Orlando||75.246||121.097||29B||74B||Universal (Adventure Way)||Westbound exit and entrance|
|75.246||121.097||30||75||SR 435 (Kirkman Road) / International Drive – Universal||Signed as exits 75A (south) and 75B (north)|
|76.359||122.888||31||77||Turnpike (SR 91) – Miami, Ocala|
|77.760||125.143||31A||78||Conroy Road||Serves The Mall at Millenia, Holy Land Experience|
|79.147||127.375||32||79||CR 423 (John Young Parkway)|
|80.474||129.510||33||80||US 17 / US 92 / US 441 (Orange Blossom Trail / SR 500 / SR 600)||Signed as exits 80A (south/west) and 80B (north/east) eastbound; previously signed as exits 33A and 33B accordingly; westbound is a left exit, signed as exit 80 and only providing south/west access|
|81.004||130.363||34||81A||To US 17 north / US 92 east / US 441 north / Michigan Street||Westbound exit and eastbound entrance|
|81.469||131.112||35||81BC||Kaley Avenue||Signed as exits 81B (east) and 81C (west) westbound|
|82.116||132.153||36||82A||SR 408 (East–West Expressway)|
|82.24||132.35||37||82B||Gore Street||former westbound-only interchange; westbound entrance remains|
|82.636||132.990||38||82B||Anderson Street / South Street||To Amway Center, History Center; formerly signed as exit 82C|
|82.78||133.22||39||83||South Street||Closed interchange; no eastbound exit|
|83.30||134.06||40||83A||SR 526 (Robinson Street)||Former interchange; eastbound exit and westbound entrance|
|83.792||134.850||41||83A||US 17 / US 92 / SR 50 (Colonial Drive / SR 600) / Amelia Street – Bob Carr||Signed as exit 84A westbound; formerly signed as exit 83B eastbound|
|84.279||135.634||42||84||Ivanhoe Boulevard||Signed as exit 84B westbound|
|85.890||138.227||44||86||Par Street||Eastbound exit and westbound entrance|
|Winter Park||86.789||139.673||45||87||Fairbanks Avenue (SR 426)|
|87.767||141.247||46||88||SR 423 (Lee Road / US 17 Truck south / US 92 Truck west)||Western end of US 17 Truck / US 92 Truck overlap; serves Eatonville|
|Maitland||89.491||144.022||47||90||SR 414 (Maitland Boulevard / US 17 Truck north / US 92 Truck east)||Eastern end of US 17 Truck / US 92 Truck overlap; signed as exits 90A (east) and 90B (west) eastbound|
|Seminole||Altamonte Springs||91.631||147.466||48||92||SR 436 – Altamonte Springs, Apopka|
|Longwood||93.613||150.656||49||94||SR 434 – Longwood, Winter Springs|
|Lake Mary||98.400||158.359||50||98||Lake Mary, Heathrow (Lake Mary Boulevard)|
|100.628||161.945||51A||101A||CR 46A – Sanford, Heathrow|
|Sanford||101.366||163.133||—||101B||SR 417 south (Seminole Expressway) – International Airports (Sanford, Orlando), Sanford|
|102.505||164.966||51||101C||SR 46 – Mount Dora, Sanford Historic District|
|103.997||167.367||52||104||US 17 / US 92 (SR 15 / SR 600) – Sanford|
|St. Johns River (Lake Monroe)||St. Johns River Veterans Memorial Bridge|
|Volusia||Deltona–DeBary city line||107.821||173.521||53||108||DeBary, Deltona (CR 4162)|
|Deltona–Orange City city line||110.636||178.051||53C||111||Deltona, Orange City (CR 4146)||Signed as exits 111A (Deltona) and 111B (Orange City); previously signed as exits 53CA and 53CB accordingly|
|Deltona–DeLand city line||113.783||183.116||54||114||SR 472 – Deltona, DeLand|
|Lake Helen||115.898||186.520||55||116||DeLand, Lake Helen Historic District (CR 4116)|
|DeLand||118.456||190.636||56||118||SR 44 – New Smyrna Beach, DeLand Historic District||Signed as exits 118A (east) and 118B (west)|
|Daytona Beach||129.131||207.816||57||129||US 92 east (SR 600) – Daytona Beach||Eastbound exit and westbound entrance|
|131.987||212.412||—||—||I‑95 (SR 9) – Daytona Beach, Jacksonville, Miami|
|132.298||212.913||58||132||SR 400 east – South Daytona|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
State Road 400
|Length:||136.514 mi (219.698 km)|
State Road 400 (SR 400), unsigned while concurrent with I-4, becomes signed east of I-95. The road extends for three miles (4.8 km) from the northeast terminus of I-4, on the south side of Daytona International Speedway and Daytona Beach International Airport, to an intersection with US 1 (SR 5) in Daytona Beach. Named Beville Road, it runs along the boundary between the cities of Daytona Beach and South Daytona. Sections of Beville Road are classified as a "Scenic Thoroughfare" by the City of Daytona Beach.
The entire route is in Volusia County.
|Daytona Beach||0.000||0.000||I‑95 (SR 9) – Jacksonville||Eastern end of I-4 overlap|
|0.271||0.436||CR 4009 (Williamson Boulevard) – International Airport|
|2.181||3.510||SR 483 north / CR 483 south (Clyde Morris Boulevard) – Embry Riddle University, Daytona State College, University of Central Florida|
|Daytona Beach–South Daytona city line||2.852||4.590||SR 5A (South Nova Road) – Museum, Bethune Cookman University|
|4.216||6.785||US 1 (South Ridgewood Avenue / SR 5) – Daytona Beach, South Daytona, Convention Center|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- Hurricane Charley, sometimes referred to as the "I-4 Hurricane"
- Staff (October 31, 2002). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of October 31, 2002". Route Log and Finder List. Federal Highway Administration. Retrieved June 7, 2007.
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- "FAQs". I-4 Ultimate. Florida Department of Transportation. Retrieved 19 August 2014.
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- Google Inc. "Map of Polk County Rest Area vicinity". Google Maps (Map). Cartography by Google, Inc. http://maps.google.com/?ll=28.160514,-81.783793&spn=0.014472,0.027874&t=m&z=16. Retrieved February 3, 2013.
- Google Inc. "Map of Seminole County Rest Area vicinity". Google Maps (Map). Cartography by Google, Inc. http://maps.google.com/?ll=28.723109,-81.363029&spn=0.057581,0.111494&t=m&z=14. Retrieved February 3, 2013.
- Stratton, Jim (September 10, 2001). "Nowhere To Rest, But More Room To Drive". Orlando Sentinel. Retrieved March 9, 2014.
- Nicholson, Dave (January 2, 2009). New High-Tech Weigh Stations Open Monday On I-4. Plant City Courier.
- "Highways to Your Vacationland". All Florida and TV Week Magazine. The Evening Independent (Jacksonville, FL). June 3, 1962.
- "Time Now To Plan For Interstate 4". Editorials. The Evening Independent (Jacksonville, FL). July 14, 1965. p. 10A. Retrieved March 13, 2014.
- Yogman, Ron (November 22, 1967). "City Buzzes At Interstate Impact On 1,600 Parcels". The Evening Independent (Jacksonville, FL). p. 2A. Retrieved March 13, 2014; Subsequent articles:
- "Section 2 of Interstate-4". The Evening Independent (Jacksonville, FL). November 23, 1967. p. 3A. Retrieved March 13, 2014;
- "Section 4 of Interstate 4". The Evening Independent (Jacksonville, FL). November 24, 1967. p. 6A. Retrieved March 13, 2013;
- "I-4 Closeup: Sections 6, 7". The Evening Independent (Jacksonville, FL). November 25, 1967. p. 4A. Retrieved March 13, 2014;
- "A Final, Closeup Look At Interstate 4 Route". The Evening Independent (Jacksonville, FL). November 27, 1967. p. 4A. Retrieved March 13, 2014.
- "State Agents Lay Out I-4's Tour To The South". St. Petersburg Times. July 19, 1968. p. 1B. Retrieved March 13, 2014.
- Droz, Robert V. "Historic Florida Interstate Information". Florida in Kodachrome. Self-published. Retrieved November 27, 2011.[unreliable source]
- Staff. "Florida's Interstate Exit Numbers- I-4". Florida Department of Transportation. Retrieved November 18, 2010.
- "Ghostly Images Seen, Photographed On 'Deadly' Stretch Of I-4". Orlando: WKMG-TV.[dead link]
- Staff. "Construction Projects: I-4/I-275 Interchange (operational improvements, completed December 2006)". Tampa Bay Interstates. Florida Department of Transportation. Retrieved November 27, 2011.
- Staff (August 8, 2006). "Eastbound I-4 in new alignment". Tampa Bay Interstates. Florida Department of Transportation.[dead link]
- "Eastbound I-4 traffic: New lanes, new exit through Ybor City". St. Petersburg, FL: WTSP-TV. August 7, 2006.[dead link]
- "New I-4 lanes help drivers get to concert early". St. Petersburg, FL: WTSP-TV. August 10, 2006.[dead link]
- Staff (August 8, 2006). "New eastbound I-4 lane open!". Tampa Bay Interstates. Florida Department of Transportation.[dead link]
- Staff. "I-4/Crosstown Connector Project Page". Tampa Bay Interstates. Florida Department of Transportation.[dead link]
- Staff. "US 192 Interchange_Project Overview". Trans4mation. Florida Department of Transportation. Retrieved November 27, 2011.
- Hamburg, Jay (September 13, 2007). "Toll lanes on I-4 appear likely". Orlando Sentinel. Retrieved November 27, 2011.
- Staff. "I-4 Trans4mation (FSTR 408 Interchange Project)". Trans4mation. Florida Department of Transportation. Retrieved November 27, 2011.
- "On The Move". Orlando, FL: Central Florida News 13. April 25, 2006.[dead link]
- "Rising above I-4 crowds". Orlando Sentinel. April 26, 2006.[dead link]
- "Changes Under Way On I-4". Daytona Beach, FL: WESH-TV. April 26, 2006.
- "On The Move". Orlando, FL: Central Florida News 13. April 26, 2006.[dead link]
- "Interstate 4 Has Reopened in Both Directions". St. Petersburg, FL: Bay News 9. January 10, 2008.[dead link]
- "Candidates Eye Voters on Florida's I-4". CNN. October 11, 2004.
- "408464-1 I-4 widening from SR 44 to East of I-95". Central Florida Roads. Florida Department of Transportation. Retrieved 20 August 2014.
- Harper, Mark (17 April 2014). "Volusia supports $2.5M study of SunRail to Daytona". Daytona Beach News Journal. Retrieved 20 August 2014.
- Staff. "Future I-4 Improvements". Moving-4-Ward. Florida Department of Transportation. Retrieved February 18, 2013.
- "Straight Line Diagrams". Florida Department of Transportation. Retrieved March 8, 2014.
- "Scenic Thoroughfare Classification". Land Development Code. Daytona Beach, Florida. Retrieved November 27, 2011 – via Municode. (subscription required (. ))
|Wikimedia Commons has media related to Interstate 4.|
|Wikivoyage has a travel guide for Interstate 4.|
- Tampa Bay Interstates (Tampa-area reconstruction)
- Central Florida Roads
- I4Polk.com[dead link] (Lakeland-area reconstruction)