US Bridges

Msas 406 over BNSF RR

Poor

Hennepin County, Minnesota · 0.5 MI SW of JCT Csah 40 · Structure no. 90471

Built
1941
84 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
142 ft
7 main spans
Daily traffic
1,334
2021 count
Owner
Railroad
Railroad

About this bridge

Msas 406 over BNSF RR is a wood or timber stringer/multi-beam or girder carrying Msas 406 over BNSF RR in Hennepin County, Minnesota. It was built in 1941, so it is 84 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. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 1,334 vehicles a day, projected to reach 1,500 by 2041. The structure is 142 ft (43.3 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMsas 406
CrossesBNSF RR
Location0.5 MI SW of JCT Csah 40
RouteCity Street 406
Coordinates44.97607, -93.30431
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
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 rating43.2 US tons
Inventory rating32.4 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans7
Design loadUnknown
Structure length142 ft (43.3 m)
Longest span21 ft (6.4 m)
Deck width51 ft (15.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,334 (2021)
Projected traffic1,500 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$615 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Msas 406 over BNSF RR built?

It was built in 1941, making it 84 years old in 2025.

What condition is Msas 406 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 April 2024.

How much traffic does Msas 406 over BNSF RR carry?

About 1,334 vehicles per day (2021 count).

How long is Msas 406 over BNSF RR?

The structure is 142 ft (43.3 m) long with a longest span of 21 ft (6.4 m) and a deck 51 ft wide.

Who owns Msas 406 over BNSF RR?

It is owned by the Railroad.