US Bridges

Cth Aa over Duncan Creek

Fair

Chippewa County, Wisconsin · 0.6 M E 83rd Street · Structure no. B09018000000000

Built
1994
31 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
420
2023 count
Owner
County
County Highway Agency

About this bridge

Cth Aa over Duncan Creek is a prestressed concrete stringer/multi-beam or girder carrying Cth Aa over Duncan Creek in Chippewa County, Wisconsin. It was built in 1994, so it is 31 years old, younger 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 420 vehicles a day, roughly 7% of them trucks, projected to reach 440 by 2042. The structure is 55 ft (16.7 m) long and 32 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesCth Aa
CrossesDuncan Creek
Location0.6 M E 83rd Street
RouteCounty Highway 0AA
CountyChippewa County
StateWisconsin
Coordinates45.189, -91.50392
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length55 ft (16.7 m)
Longest span53 ft (16.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic420 (2023)
Projected traffic440 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Aa over Duncan Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Cth Aa 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 November 2023.

How much traffic does Cth Aa over Duncan Creek carry?

About 420 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Cth Aa over Duncan Creek?

The structure is 55 ft (16.7 m) long with a longest span of 53 ft (16.2 m) and a deck 32 ft wide.

Who owns Cth Aa over Duncan Creek?

It is owned by the County Highway Agency.