US Bridges

Cth U over Boice Creek

FairPosted for load

Grant County, Wisconsin · 4.7M W JCT Sth 61 · Structure no. B22005500000000

Built
1977
48 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
99 ft
2 main spans
Daily traffic
678
2022 count
Owner
County
County Highway Agency

About this bridge

Cth U over Boice Creek is a concrete continuous slab carrying Cth U over Boice Creek in Grant County, Wisconsin. It was built in 1977, so it is 48 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. Its operating status is: posted for other load-capacity restriction.

It carries about 678 vehicles a day, projected to reach 745 by 2043. The structure is 99 ft (30.1 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCth U
CrossesBoice Creek
Location4.7M W JCT Sth 61
RouteCounty Highway 0U
CountyGrant County
StateWisconsin
Coordinates42.7295, -90.75825
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.8 US tons
Inventory rating16.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length99 ft (30.1 m)
Longest span48 ft (14.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic678 (2022)
Projected traffic745 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Cth U over Boice Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Cth U over Boice Creek 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 September 2024.

How much traffic does Cth U over Boice Creek carry?

About 678 vehicles per day (2022 count).

How long is Cth U over Boice Creek?

The structure is 99 ft (30.1 m) long with a longest span of 48 ft (14.6 m) and a deck 32 ft wide.

Who owns Cth U over Boice Creek?

It is owned by the County Highway Agency.