US Bridges

Mn 51 over Como Avenue (csah 75)

Fair

Ramsey County, Minnesota · 1.5 MI N of JCT TH 12 · Structure no. 62015

Built
1965
60 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
167 ft
3 main spans
Daily traffic
36,000
2014 count
Owner
State
State Highway Agency

About this bridge

Mn 51 over Como Avenue (csah 75) is a steel continuous stringer/multi-beam or girder carrying Mn 51 over Como Avenue (csah 75) 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 36,000 vehicles a day, roughly 3% of them trucks, projected to reach 36,000 by 2034. The structure is 167 ft (51 m) long and 68 ft wide.

Location

Open in Google Maps
CarriesMn 51
CrossesComo Avenue (csah 75)
Location1.5 MI N of JCT TH 12
RouteState Highway 51
CountyRamsey County
StateMinnesota
Coordinates44.97735, -93.16706
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length167 ft (51 m)
Longest span78 ft (23.7 m)
Deck width68 ft (20.8 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,000 (2014)
Projected traffic36,000 by 2034
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$1,000 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mn 51 over Como Avenue (csah 75) built?

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

What condition is Mn 51 over Como Avenue (csah 75) 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 Como Avenue (csah 75) carry?

About 36,000 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is Mn 51 over Como Avenue (csah 75)?

The structure is 167 ft (51 m) long with a longest span of 78 ft (23.7 m) and a deck 68 ft wide.

Who owns Mn 51 over Como Avenue (csah 75)?

It is owned by the State Highway Agency.