US Bridges

Cth Ss over Duncan Creek

FairPosted for load

Chippewa County, Wisconsin · 0.2 M N 87th Street · Structure no. B09001400000000

Built
1957
68 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
75 ft
2 main spans
Daily traffic
1,100
2023 count
Owner
County
County Highway Agency

About this bridge

Cth Ss over Duncan Creek is a concrete continuous slab carrying Cth Ss over Duncan Creek in Chippewa County, Wisconsin. It was built in 1957, so it is 68 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. Its operating status is: posted for other load-capacity restriction.

It carries about 1,100 vehicles a day, projected to reach 1,166 by 2042. The structure is 75 ft (23 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCth Ss
CrossesDuncan Creek
Location0.2 M N 87th Street
RouteCounty Highway 0SS
CountyChippewa County
StateWisconsin
Coordinates45.154, -91.51106
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating28.8 US tons
Inventory rating16.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length75 ft (23 m)
Longest span37 ft (11.3 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,166 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Ss over Duncan Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Cth Ss over Duncan 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 December 2023.

How much traffic does Cth Ss over Duncan Creek carry?

About 1,100 vehicles per day (2023 count).

How long is Cth Ss over Duncan Creek?

The structure is 75 ft (23 m) long with a longest span of 37 ft (11.3 m) and a deck 35 ft wide.

Who owns Cth Ss over Duncan Creek?

It is owned by the County Highway Agency.