US Bridges

Sth 81 over East Fork Raccoon Creek

Good

Rock County, Wisconsin · 2.4M E JCT Cth H · Structure no. B53015900000000

Built
1990
35 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
3,300
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 81 over East Fork Raccoon Creek is a concrete continuous culvert carrying Sth 81 over East Fork Raccoon Creek in Rock County, Wisconsin. It was built in 1990, so it is 35 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,300 vehicles a day, roughly 7% of them trucks, projected to reach 3,930 by 2042. The structure is 24 ft (7.4 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesSth 81
CrossesEast Fork Raccoon Creek
Location2.4M E JCT Cth H
RouteState Highway 81
Coordinates42.51145, -89.12109
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length24 ft (7.4 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2022)
Projected traffic3,930 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 81 over East Fork Raccoon Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Sth 81 over East Fork Raccoon Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Sth 81 over East Fork Raccoon Creek carry?

About 3,300 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Sth 81 over East Fork Raccoon Creek?

The structure is 24 ft (7.4 m) long with a longest span of 11 ft (3.4 m).

Who owns Sth 81 over East Fork Raccoon Creek?

It is owned by the State Highway Agency.