US Bridges

Sth 40 / Main ST over Duncan Creek

FairPosted for load

Chippewa County, Wisconsin · 0.6M N JCT Ush 53 to N · Structure no. B09048100000000

Built
1942
83 years old, rebuilt 1991
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
111 ft
3 main spans
Daily traffic
10,130
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sth 40 / Main ST over Duncan Creek is a steel stringer/multi-beam or girder carrying Sth 40 / Main ST over Duncan Creek in Chippewa County, Wisconsin. It was built in 1942 and reconstructed in 1991, so it is 83 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 10,130 vehicles a day, roughly 3% of them trucks, projected to reach 10,715 by 2043. The structure is 111 ft (33.7 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSth 40 / Main ST
CrossesDuncan Creek
Location0.6M N JCT Ush 53 to N
RouteState Highway 0
Coordinates45.09995, -91.48912
Functional classRural Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating37.8 US tons
Inventory rating21.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length111 ft (33.7 m)
Longest span50 ft (15.3 m)
Deck width42 ft (12.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,130 (2023)
Projected traffic10,715 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$712,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 40 / Main ST over Duncan Creek built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1991.

What condition is Sth 40 / Main ST 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 July 2024.

How much traffic does Sth 40 / Main ST over Duncan Creek carry?

About 10,130 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Sth 40 / Main ST over Duncan Creek?

The structure is 111 ft (33.7 m) long with a longest span of 50 ft (15.3 m) and a deck 42 ft wide.

Who owns Sth 40 / Main ST over Duncan Creek?

It is owned by the City or Municipal Highway Agency.