U.S. Route 377

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U.S. Route 377 marker

U.S. Route 377
Route information
Auxiliary route of US 77
Length: 478 mi (769 km)
Existed: 1930 – present
Major junctions
South end: US 90 / US 277 in Del Rio, Texas
North end: I‑44 / SH-99 at Stroud, Oklahoma
States: Texas, Oklahoma
Highway system

U.S. Route 377 is a north–south United States highway. Originally created as a short spur to connect Denton, Texas with Fort Worth, Texas, it has since been extended to Oklahoma and Mexico for a total length of 478 miles[1] (768 km).

Route description[edit]


The southern terminus is in Del Rio, Texas at an intersection with U.S. Route 90. It goes north of town co-signed with U.S. Route 277 for 20 miles (32 km). After splitting off, it enters Edwards County and Carta Valley. It meets SH 55 at the county seat, Rocksprings, before serving as the western terminus of SH 41. It heads northeast into Kimble County, crossing the county line near Telegraph. At Junction, Texas, it meets both Interstate 10 and US 83. It then continues northeast through London, extreme southeastern Menard County, and Mason County. In Mason County, US 377 passes through Streeter before forming a concurrency with SH 29 near Grit. In Mason, SH 29 splits off to its own alignment while US 377 turns north to join U.S. Route 87.

US 87/377 head north together into Brady, where they meet US 190, the southern terminus of US 283, and SH 71. US 377 splits off to the north and heads to Mercury and crosses the Colorado River near Winchell. In Brownwood, US 377 joins with U.S. Route 67, following its routing all the way to Stephenville, where US 377 splits off on its own again. US 377 then enters Hood County, where it passes through the county seat, Granbury. It cuts the corners of both Johnson County and Parker County before entering Tarrant County and the Dallas-Fort Worth Metroplex.

US 377 crosses Interstate 20 at exit 429A in Benbrook. It then enters Fort Worth proper, meeting SH 183 and Spur 580. It runs northeast on Camp Bowie Blvd. to Interstate 30, which it begins a concurrency with. At the Interstate 35W junction, it heads north along that highway before splitting off at Exit 52A (Belknap St.). It heads due north at the Denton Highway and continues to run parallel to I-35W through many D/FW suburbs, including Haltom City, Watauga, Keller, Westlake, Roanoke, and Argyle. In Denton, it crosses Interstate 35E and has a brief concurrency with US 380 through the eastern portion of Denton into Crossroads.

After splitting from US 380, US 377 runs through Crossroads and north into Krugerville. It continues through Aubrey, through Pilot Point, Tioga, and Collinsville, before having an interchange with US 82 at Whitesboro. It the heads north to cross Lake Texoma (the Red River) into Oklahoma.


US 377 is co-signed with State Highway 99 for its entire Oklahoma length. US 377's first junction within Oklahoma is with SH-32 west of Kingston. The first town that US 377/SH-99 pass through is Madill, where the two highways meet US 70 and State Highway 199. The next town after that is Tishomingo, where there is a brief concurrency with SH-22. US 377/SH-99 run north from Tishomingo, having a one-mile (1.6 km) three-route concurrency with SH-7 before meeting State Highway 3 southeast of Ada. US 377/SH-99 run around the east and north sides of town. On the north side of Ada, SH-3E joins the concurrency.

After leaving Ada, US 377/SH-3E/99 pass through Byng. The three highways cross the Canadian River just south of a junction that serves as the eastern terminus of SH-39 and the western terminus of SH-56. North of Bowlegs, SH-59 joins with the other routes briefly. The next major town is Seminole, where the highways meet SH-9, and SH-3E splits off. US 377/SH-99 cross I-40 at Exit 200. The highways have a junction with US 62 in Prague.

As of 2007, the highway's northern terminus is in Stroud, Oklahoma at an indeterminate point somewhere between old Route 66 (now Oklahoma State Highway 66) and modern Interstate 44. SH-99 continues north into Kansas.


State Highway 99[edit]

U.S. 377[edit]

When US 377 was commissioned in 1930, US 77 connected Dallas, Texas with the north and south, but nearby Fort Worth lacked a direct northern connection. US 377 connected US 77 in Denton, Texas with US 81 in Fort Worth, forming a parallel route between Denton and Hillsboro, where US 81 met US 77. When the Interstate highway system was built, I-35 paralleled the Dallas–Fort Worth split with routes I-35E through Dallas (along US 77) and I-35W through Fort Worth (along US 377 and US 81). The section of US 377 in Texas north of Denton was signed as SH 99 until 1968.

The "Willis Bridge" crossing the Red River was constructed in 1968. It has guardrail damage causing the remaining bridge to be very narrow and has since been considered structurally deficient. Parts of the bridge have collapsed.[2][3][4] The ETA of replacement is February 2018, costing $80 million. Engineers considered adding a passing lane for the southbound lane. (A short southbound passing lane exists south of the bridge.) The new bridge would also have wide shoulders which could be converted into a northbound passing lane.

U.S. 377 remained a 2 laned highway between Denton and Fort Worth. It has since been widened with more construction scheduled. North of Denton, U.S. 377 is currently 2 lanes.

Major intersections[edit]

US 90 / US 277 in Del Rio. US 90/US 377 travels concurrently through Del Rio. US 277/US 377 travels concurrently to north-northeast of Del Rio.
I‑10 / US 83 in Junction. US 83/US 377 travels concurrently to north of Junction.
US 87 northwest of Mason. The highways travel concurrently to Brady.
US 190 in Brady. The highways travel concurrently through Brady.
US 67 / US 84 in Brownwood. US 67/US 377 travels concurrently to Stephenville. US 84/US 377 travels concurrently to Early.
US 183 in Early. The highways travel concurrently through Early.
US 281 in Stephenville
I‑20 in Benbrook
I‑30 in Fort Worth. The highways travel concurrently through Fort Worth.
I‑30 / I‑35W in Fort Worth. I-35W/US 377 travels concurrently through Fort Worth.
US 287 in Fort Worth. The highways travel concurrently through Fort Worth.
I‑820 in Haltom City
I‑35E in Denton
US 77 in Denton. The highways travel concurrently through Denton.
US 77 / US 380 in Denton. US 377/US 380 travels concurrently to Cross Roads.
US 82 in Whitesboro
US 70 in Madill. The highways travel concurrently through Madill.
US 270 in Seminole
I‑40 south-southeast of Prague
US 62 in Prague
I‑44 in Stroud

See also[edit]

Related routes[edit]


External links[edit]

Browse numbered routes
SH 361 TX US 380
SH-325 OK US-385