US Bridges

Cth M over Big Elk Creek

PoorPosted for load

Chippewa County, Wisconsin · 0.1 M E 10th Street · Structure no. P09093500000000

Built
1940
85 years old
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
330
2023 count
Owner
County
County Highway Agency

About this bridge

Cth M over Big Elk Creek is a steel stringer/multi-beam or girder carrying Cth M over Big Elk Creek in Chippewa County, Wisconsin. It was built in 1940, so it is 85 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 330 vehicles a day, projected to reach 349 by 2043. The structure is 31 ft (9.3 m) long and 28 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

CarriesCth M
CrossesBig Elk Creek
Location0.1 M E 10th Street
RouteCounty Highway 0M
Coordinates44.929, -91.63006
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load 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 rating39.6 US tons
Inventory rating23.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.3 m)
Longest span29 ft (8.8 m)
Deck width28 ft (8.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2023)
Projected traffic349 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$196,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth M over Big Elk Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Cth M over Big Elk Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does Cth M over Big Elk Creek carry?

About 330 vehicles per day (2023 count).

How long is Cth M over Big Elk Creek?

The structure is 31 ft (9.3 m) long with a longest span of 29 ft (8.8 m) and a deck 28 ft wide.

Who owns Cth M over Big Elk Creek?

It is owned by the County Highway Agency.