US Bridges

Sth 54-MASON ST over Fox River

Fair

Brown County, Wisconsin · 3.3M E JCT Ush 41 to S · Structure no. B05013400130000

Built
1973
52 years old
Condition
Fair
inspected May 2024
Type
Movable - Bascule
Steel
Length
476 ft
1 main span
Daily traffic
34,200
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 54-MASON ST over Fox River is a steel movable - bascule carrying Sth 54-MASON ST over Fox River in Brown County, Wisconsin. It was built in 1973, so it is 52 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 34,200 vehicles a day, roughly 10% of them trucks, projected to reach 41,040 by 2042. The structure is 476 ft (145.1 m) long and 94 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesSth 54-MASON ST
CrossesFox River
Location3.3M E JCT Ush 41 to S
RouteState Highway 54
CountyBrown County
StateWisconsin
Coordinates44.50887, -88.02241
Functional classUrban Other Principal 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckOpen grating
Main spans1 (+1 approach)
Design loadHS 20
Structure length476 ft (145.1 m)
Longest span166 ft (50.6 m)
Deck width94 ft (28.5 m)
Roadway width82 ft (25.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,200 (2022)
Projected traffic41,040 by 2042
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Sth 54-MASON ST over Fox River built?

It was built in 1973, making it 52 years old in 2025.

What condition is Sth 54-MASON ST over Fox River 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-MASON ST over Fox River carry?

About 34,200 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Sth 54-MASON ST over Fox River?

The structure is 476 ft (145.1 m) long with a longest span of 166 ft (50.6 m) and a deck 94 ft wide.

Who owns Sth 54-MASON ST over Fox River?

It is owned by the State Highway Agency.