US Bridges

Sth 54 over Mississippi River 08

Fair

Buffalo County, Wisconsin · Minnesota State Line · Structure no. B06075200000000

Built
1942
83 years old, rebuilt 1997
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,008 ft
10 main spans
Daily traffic
10,200
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 54 over Mississippi River 08 is a prestressed concrete stringer/multi-beam or girder carrying Sth 54 over Mississippi River 08 in Buffalo County, Wisconsin. It was built in 1942 and reconstructed in 1997, so it is 83 years old, older than the Wisconsin average of 40.3 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 10,200 vehicles a day, roughly 5% of them trucks, projected to reach 12,240 by 2041. The structure is 1,008 ft (307.2 m) long and 61 ft wide. If it were closed, the detour would be 64.6 mi (104 km).

CarriesSth 54
CrossesMississippi River 08
LocationMinnesota State Line
RouteState Highway 54
Coordinates44.06135, -91.63775
Functional classRural 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.1 US tons
Inventory rating44.6 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans10
Design loadH 20
Structure length1,008 ft (307.2 m)
Longest span101 ft (30.7 m)
Deck width61 ft (18.6 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,200 (2021)
Projected traffic12,240 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed64.6 mi (104 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 54 over Mississippi River 08 built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1997.

What condition is Sth 54 over Mississippi River 08 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 Sth 54 over Mississippi River 08 carry?

About 10,200 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Sth 54 over Mississippi River 08?

The structure is 1,008 ft (307.2 m) long with a longest span of 101 ft (30.7 m) and a deck 61 ft wide.

Who owns Sth 54 over Mississippi River 08?

It is owned by the State Highway Agency.