US Bridges

Msas 149 over I 35 Michigan St; RR

Fair

St. Louis County, Minnesota · 0.5 MI NE of JCT TH 535 · Structure no. 69803

Built
1983
42 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
907 ft
13 main spans
Daily traffic
3,050
2017 count
Owner
State
State Highway Agency

About this bridge

Msas 149 over I 35 Michigan St; RR is a prestressed concrete stringer/multi-beam or girder carrying Msas 149 over I 35 Michigan St; RR in St. Louis County, Minnesota. It was built in 1983, so it is 42 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 6 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 3,050 vehicles a day, projected to reach 3,050 by 2039. The structure is 907 ft (276.6 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMsas 149
CrossesI 35 Michigan St; RR
Location0.5 MI NE of JCT TH 535
RouteCity Street 149
CountySt. Louis County
StateMinnesota
Coordinates46.77038, -92.11727
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.8 US tons
Inventory rating56.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20 + Mod
Structure length907 ft (276.6 m)
Longest span81 ft (24.6 m)
Deck width62 ft (19 m)
Roadway width53 ft (16.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,050 (2017)
Projected traffic3,050 by 2039
Trucks—
Lanes on structure4
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Msas 149 over I 35 Michigan St; RR built?

It was built in 1983, making it 42 years old in 2025.

What condition is Msas 149 over I 35 Michigan St; RR 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 September 2024.

How much traffic does Msas 149 over I 35 Michigan St; RR carry?

About 3,050 vehicles per day (2017 count).

How long is Msas 149 over I 35 Michigan St; RR?

The structure is 907 ft (276.6 m) long with a longest span of 81 ft (24.6 m) and a deck 62 ft wide.

Who owns Msas 149 over I 35 Michigan St; RR?

It is owned by the State Highway Agency.