US Bridges

Sth 54 over Bn RR

Fair

Buffalo County, Wisconsin · 0.6M E Minn State Line · Structure no. B06075400000000

Built
1941
84 years old, rebuilt 1984
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
166 ft
3 main spans
Daily traffic
10,200
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 54 over Bn RR is a steel continuous stringer/multi-beam or girder carrying Sth 54 over Bn RR in Buffalo County, Wisconsin. It was built in 1941 and reconstructed in 1984, so it is 84 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 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 10,200 vehicles a day, roughly 5% of them trucks, projected to reach 12,240 by 2041. The structure is 166 ft (50.6 m) long and 33 ft wide. If it were closed, the detour would be 64.6 mi (104 km).

Location

Open in Google Maps
CarriesSth 54
CrossesBn RR
Location0.6M E Minn State Line
RouteState Highway 54
CountyBuffalo County
StateWisconsin
Coordinates44.07178, -91.63226
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.8 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length166 ft (50.6 m)
Longest span64 ft (19.5 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 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
CrossesRailroad
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 54 over Bn RR built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1984.

What condition is Sth 54 over Bn 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 May 2024.

How much traffic does Sth 54 over Bn RR carry?

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

How long is Sth 54 over Bn RR?

The structure is 166 ft (50.6 m) long with a longest span of 64 ft (19.5 m) and a deck 33 ft wide.

Who owns Sth 54 over Bn RR?

It is owned by the State Highway Agency.