US Bridges

Msas 108 over BNSF RR

Poor

St. Louis County, Minnesota · 0.2 MI E of Central Ave · Structure no. 9255

Built
1959
66 years old
Condition
Poor
inspected October 2023
Type
Slab
Concrete Continuous
Length
156 ft
4 main spans
Daily traffic
1,064
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Msas 108 over BNSF RR is a concrete continuous slab carrying Msas 108 over BNSF RR in St. Louis County, Minnesota. It was built in 1959, so it is 66 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,064 vehicles a day, projected to reach 1,300 by 2042. The structure is 156 ft (47.5 m) long and 45 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesMsas 108
CrossesBNSF RR
Location0.2 MI E of Central Ave
RouteCity Street 108
CountySt. Louis County
StateMinnesota
Coordinates46.73062, -92.16267
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating100.8 US tons
Inventory rating60.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length156 ft (47.5 m)
Longest span38 ft (11.6 m)
Deck width45 ft (13.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,064 (2022)
Projected traffic1,300 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 108 over BNSF RR built?

It was built in 1959, making it 66 years old in 2025.

What condition is Msas 108 over BNSF RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does Msas 108 over BNSF RR carry?

About 1,064 vehicles per day (2022 count).

How long is Msas 108 over BNSF RR?

The structure is 156 ft (47.5 m) long with a longest span of 38 ft (11.6 m) and a deck 45 ft wide.

Who owns Msas 108 over BNSF RR?

It is owned by the City or Municipal Highway Agency.