US Bridges

Cth I over Spring Valley Creek

Fair

Iowa County, Wisconsin · 0.9M S JCT Cth P · Structure no. B25007400000000

Built
1940
85 years old, rebuilt 1991
Condition
Fair
inspected April 2024
Type
Slab
Wood or Timber
Length
60 ft
2 main spans
Daily traffic
379
2022 count
Owner
County
County Highway Agency

About this bridge

Cth I over Spring Valley Creek is a wood or timber slab carrying Cth I over Spring Valley Creek in Iowa County, Wisconsin. It was built in 1940 and reconstructed in 1991, so it is 85 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 379 vehicles a day, projected to reach 416 by 2043. The structure is 60 ft (18.3 m) long and 25 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCth I
CrossesSpring Valley Creek
Location0.9M S JCT Cth P
RouteCounty Highway 0I
CountyIowa County
StateWisconsin
Coordinates43.08189, -90.31553
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating55.8 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span30 ft (9 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic379 (2022)
Projected traffic416 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 I over Spring Valley Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1991.

What condition is Cth I over Spring Valley 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 April 2024.

How much traffic does Cth I over Spring Valley Creek carry?

About 379 vehicles per day (2022 count).

How long is Cth I over Spring Valley Creek?

The structure is 60 ft (18.3 m) long with a longest span of 30 ft (9 m) and a deck 25 ft wide.

Who owns Cth I over Spring Valley Creek?

It is owned by the County Highway Agency.