Minnesota State Highway 55
|Olson Memorial Highway|
|Maintained by Mn/DOT|
|Length:||220.572 mi (354.976 km)|
|Existed:||1933 – present|
|West end:||ND 11 at the Bois de Sioux River|
| U.S. 59 , MN 79 at Elbow Lake
MN 28 , MN 29 at Glenwood
MN 4 , MN 23 at Paynesville
MN 25 at Buffalo
I-494 at Plymouth
U.S. 169 at Plymouth , Golden Valley
MN 100 at Golden Valley
I-94 at Minneapolis
MN 62 , MN 5 at Fort Snelling
U.S. 52 at Rosemount
|East end:||U.S. 61 in Hastings|
|Counties:||Wilkin, Grant, Douglas, Pope, Stearns, Kandiyohi, Meeker, Wright, Hennepin, Dakota|
Minnesota State Highway 55 is a highway in west-central, central, and east-central Minnesota, which runs from the North Dakota state line near Tenney and continues east and southeast to its eastern terminus at its intersection with U.S. Highway 61 in Hastings.
This route, signed east–west, runs roughly diagonally across the central part of Minnesota.
Highway 55 is 221 miles (356 km) in length.
Highway 55 begins at the Bois de Sioux River, at the Minnesota — North Dakota state line near Tenney. North Dakota Highway 11 is its counterpoint upon crossing the state line. Highway 55 continues east to Tenney, Nashua, and Wendell. The route has a junction with U.S. Highway 59 before entering the city of Elbow Lake. Highways 55 and 59 run concurrently for 11 miles until reaching Barrett.
Highway 55 then continues independently again to Hoffman, Kensington, Farwell, and Lowry before reaching the city of Glenwood. At Glenwood, Highway 55 has an intersection with State Highway 29 and an interchange with State Highway 28.
The route continues southeast to Sedan and Brooten before reaching its junction with U.S. Highway 71 in Belgrade. Highway 55 passes through Regal before reaching its junction with State Highways 4 and 23 at the city of Paynesville.
Highway 55 enters the Twin Cities area at Rockford and Greenfield, continuing east to Medina and Plymouth. Highway 55 has a junction with I-494 in Plymouth. Highway 55 continues east and has a junction with U.S. Highway 169 at the Plymouth / Golden Valley boundary line. Highway 55 continues through Golden Valley to its junction with State Highway 100. The route then continues east and enters the city of Minneapolis.
The highway has been designated Olson Memorial Highway, named for Floyd B. Olson, a popular Minnesota governor of Norwegian ancestry. While the entire route is designated as the Olson Memorial Highway, it is only consistently signed as such between Interstate 494 and N 7th Street in Minneapolis. The part of Highway 55 southeast of downtown is known as Hiawatha Avenue. A light rail corridor, the Blue Line, runs parallel to the highway for much of the Hiawatha Avenue stretch.
In July 2005, the section of Highway 55 that runs through downtown Minneapolis was turned back to local maintenance. To fill the gap, Highway 55 was rerouted along Interstate 94. Westbound, 55 now exits just before downtown at the westbound I-94 exit, and leaves the concurrency at the exit for the Olson Highway, marked with the Highway 55 shield. Eastbound, 55 leaves the Olson Highway at the interchange for I-94 eastbound, and leaves the freeway at the exit for Hiawatha Avenue, which is also marked with the Highway 55 shield.
There has been some controversy with expansion of the highway. An area known as Camp Coldwater, considered by some as the "birthplace of Minnesota," was dug up during some construction. Highway 55 has a junction with State Highway 62 at this point.
Highway 55 continues southeast through Eagan, joining briefly with State Highway 149. The route then has a junction with State Highway 3 in Inver Grove Heights. Highway 55 then runs concurrent with U.S. Highway 52 through Inver Grove Heights and into Rosemount. At Rosemount, Highway 55 leaves U.S. 52. Highway 55 continues independently again to its eastern terminus at its intersection with U.S. Highway 61 in the city of Hastings.
|This section requires expansion. (June 2011)|
Highway 55 was authorized in 1933.
In late December 2006, someone added a 7-foot (2.1 m) painting of Pac-Man near one of the anti-tailgating dots on the road. This is located on the portion of Highway 55 between Buffalo and Rockford, traveling east of Buffalo. 
|Bois de Sioux River
||0.000||0.000||Continues as ND 11 in North Dakota|
||Campbell Township||3.503||5.638||US 75|
|Champion Township||10.706||17.230||MN 9|
||Pomme de Terre Township||27.841||44.806||US 59||North end of US 59 overlap|
|Elbow Lake||31.218||50.241||MN 79|
|Barrett||38.826||62.484||US 59||South end of US 59 overlap|
||Ben Wade Township||61.151||98.413||MN 114||West end of MN 114 overlap|
|Lowry||61.814||99.480||MN 114||East end of MN 114 overlap|
|Reno Township||68.816||110.749||MN 29|
||Belgrade||93.667||150.742||US 71||West end of US 71 overlap|
|Crow River Township||94.649||152.323||US 71||East end of US 71 overlap|
||Roseville Township||106.064||170.693||MN 4||West end of MN 4 overlap|
||Union Grove Township||113.517||182.688||MN 4||East end of MN 4 overlap|
|Eden Valley||119.491||192.302||MN 22|
||Kimball||131.973||212.390||MN 15 / MN 24||West end of MN 24 overlap|
||Annandale||141.631||227.933||MN 24||East end of MN 24 overlap|
|Buffalo||155.200||249.770||MN 25 (Central Avenue)|
|Minneapolis||189.651||305.214||I-94||West end of I-94 overlap|
|191.914||308.856||I-94||East end of I-94 overlap|
|CR 152 (Cedar Avenue)||Interchange|
|CR 3 (Lake Street)||Interchange|
||Mendota Heights||199.151||320.502||MN 110|
|MN 149||North end of MN 149 overlap|
|202.705||326.222||MN 149||South end of MN 149 overlap|
|Inver Grove Heights||204.557–
|MN 3 (South Robert Trail)||Interchange|
|CR 73 (Barnes Avenue)||Interchange|
|206.515||332.354||US 52||North end of US 52 overlap|
|CR 56 (Concord Boulevard)||Interchange, old MN 56|
|Inver Grove Heights–
|Rosemount||210.836||339.308||US 52||South end of US 52 overlap|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- "Trunk Highway Log Point Listing - Construction District 5" (PDF). Minnesota Department of Transportation. August 20, 2010. Retrieved October 23, 2010.
- Minnesota Statutes section 161.14 subd. 3 - https://www.revisor.mn.gov/statutes/?id=161.14
- Riner, Steve. "Details of routes 51-75". The Unofficial Minnesota Highways Page. Self-published. Retrieved October 23, 2010.[unreliable source]
- "Trunk Highway Log Point Listing - Construction District 4" (PDF). Minnesota Department of Transportation. August 23, 2010. Retrieved October 23, 2010.
- "Trunk Highway Log Point Listing - Construction District 3" (PDF). Minnesota Department of Transportation. August 23, 2010. Retrieved October 23, 2010.
- "Trunk Highway Log Point Listing - Construction District 8" (PDF). Minnesota Department of Transportation. August 23, 2010. Retrieved October 23, 2010.