US Bridges

Mn 51 over BNSF Rail; Service RD

Fair

Ramsey County, Minnesota · 1.2 MI N of JCT TH 12 · Structure no. 62014

Built
1965
60 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
202 ft
4 main spans
Daily traffic
34,000
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 51 over BNSF Rail; Service RD is a steel continuous stringer/multi-beam or girder carrying Mn 51 over BNSF Rail; Service RD in Ramsey County, Minnesota. It was built in 1965, so it is 60 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 34,000 vehicles a day, roughly 3% of them trucks, projected to reach 42,500 by 2041. The structure is 202 ft (61.6 m) long and 93 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMn 51
CrossesBNSF Rail; Service RD
Location1.2 MI N of JCT TH 12
RouteState Highway 51
CountyRamsey County
StateMinnesota
Coordinates44.97344, -93.16704
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.4 US tons
Inventory rating34.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span64 ft (19.4 m)
Deck width93 ft (28.4 m)
Roadway width78 ft (23.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,000 (2021)
Projected traffic42,500 by 2041
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$244 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mn 51 over BNSF Rail; Service RD built?

It was built in 1965, making it 60 years old in 2025.

What condition is Mn 51 over BNSF Rail; Service RD in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Mn 51 over BNSF Rail; Service RD carry?

About 34,000 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Mn 51 over BNSF Rail; Service RD?

The structure is 202 ft (61.6 m) long with a longest span of 64 ft (19.4 m) and a deck 93 ft wide.

Who owns Mn 51 over BNSF Rail; Service RD?

It is owned by the State Highway Agency.