US Bridges

Cth B over Little Plate River

Fair

Grant County, Wisconsin · 2.8M W JCT Sth 81 · Structure no. B22002800000000

Built
1952
73 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
187 ft
3 main spans
Daily traffic
1,325
2022 count
Owner
County
County Highway Agency

About this bridge

Cth B over Little Plate River is a steel continuous stringer/multi-beam or girder carrying Cth B over Little Plate River in Grant County, Wisconsin. It was built in 1952, so it is 73 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 1,325 vehicles a day, projected to reach 1,457 by 2043. The structure is 187 ft (57 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCth B
CrossesLittle Plate River
Location2.8M W JCT Sth 81
RouteCounty Highway 0B
CountyGrant County
StateWisconsin
Coordinates42.74525, -90.52736
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length187 ft (57 m)
Longest span70 ft (21.3 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,325 (2022)
Projected traffic1,457 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$981,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth B over Little Plate River built?

It was built in 1952, making it 73 years old in 2025.

What condition is Cth B over Little Plate 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 September 2024.

How much traffic does Cth B over Little Plate River carry?

About 1,325 vehicles per day (2022 count).

How long is Cth B over Little Plate River?

The structure is 187 ft (57 m) long with a longest span of 70 ft (21.3 m) and a deck 25 ft wide.

Who owns Cth B over Little Plate River?

It is owned by the County Highway Agency.