US Bridges

Ush 18 Wb-Ush 151 over Cth Z

Fair

Iowa County, Wisconsin · 2.5M W JCT Cth Y · Structure no. B25001900000000

Built
1980
45 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
134 ft
3 main spans
Daily traffic
7,300
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 18 Wb-Ush 151 over Cth Z is a concrete continuous slab carrying Ush 18 Wb-Ush 151 over Cth Z in Iowa County, Wisconsin. It was built in 1980, so it is 45 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 7,300 vehicles a day, roughly 15% of them trucks, projected to reach 8,760 by 2042. The structure is 134 ft (40.9 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUsh 18 Wb-Ush 151
CrossesCth Z
Location2.5M W JCT Cth Y
RouteU.S. Route 18
Coordinates42.96758, -90.09295
Functional classRural Principal Arterial - Other

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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length134 ft (40.9 m)
Longest span54 ft (16.6 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,300 (2022)
Projected traffic8,760 by 2042
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ush 18 Wb-Ush 151 over Cth Z built?

It was built in 1980, making it 45 years old in 2025.

What condition is Ush 18 Wb-Ush 151 over Cth Z 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 July 2023.

How much traffic does Ush 18 Wb-Ush 151 over Cth Z carry?

About 7,300 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Ush 18 Wb-Ush 151 over Cth Z?

The structure is 134 ft (40.9 m) long with a longest span of 54 ft (16.6 m) and a deck 42 ft wide.

Who owns Ush 18 Wb-Ush 151 over Cth Z?

It is owned by the State Highway Agency.