US Bridges

Sth 35 over Mill Coulee

Fair

Crawford County, Wisconsin · 0.3M N JCT Cth K · Structure no. B12055900000000

Built
1938
87 years old, rebuilt 1984
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
49 ft
2 main spans
Daily traffic
2,900
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 35 over Mill Coulee is a steel stringer/multi-beam or girder carrying Sth 35 over Mill Coulee in Crawford County, Wisconsin. It was built in 1938 and reconstructed in 1984, so it is 87 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 2,900 vehicles a day, roughly 10% of them trucks, projected to reach 5,930 by 2043. The structure is 49 ft (15 m) long and 35 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

Open in Google Maps
CarriesSth 35
CrossesMill Coulee
Location0.3M N JCT Cth K
RouteState Highway 35
CountyCrawford County
StateWisconsin
Coordinates43.11134, -91.14129
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length49 ft (15 m)
Longest span25 ft (7.5 m)
Deck width35 ft (10.6 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2022)
Projected traffic5,930 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 35 over Mill Coulee built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1984.

What condition is Sth 35 over Mill Coulee 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 November 2024.

How much traffic does Sth 35 over Mill Coulee carry?

About 2,900 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Sth 35 over Mill Coulee?

The structure is 49 ft (15 m) long with a longest span of 25 ft (7.5 m) and a deck 35 ft wide.

Who owns Sth 35 over Mill Coulee?

It is owned by the State Highway Agency.