US Bridges

Cth B over Trade River

Fair

Polk County, Wisconsin · 4.9M W JCT Sth 35 · Structure no. P48091300000000

Built
1941
84 years old
Condition
Fair
inspected April 2024
Type
Culvert
Steel
Length
29 ft
3 main spans
Daily traffic
520
2024 count
Owner
County
County Highway Agency

About this bridge

Cth B over Trade River is a steel culvert carrying Cth B over Trade River in Polk County, Wisconsin. It was built in 1941, so it is 84 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 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 520 vehicles a day, projected to reach 667 by 2043. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCth B
CrossesTrade River
Location4.9M W JCT Sth 35
RouteCounty Highway 0B
CountyPolk County
StateWisconsin
Coordinates45.60642, -92.57839
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadH 15
Structure length29 ft (8.7 m)
Longest span8 ft (2.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic520 (2024)
Projected traffic667 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 B over Trade River built?

It was built in 1941, making it 84 years old in 2025.

What condition is Cth B over Trade River 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 April 2024.

How much traffic does Cth B over Trade River carry?

About 520 vehicles per day (2024 count).

How long is Cth B over Trade River?

The structure is 29 ft (8.7 m) long with a longest span of 8 ft (2.3 m).

Who owns Cth B over Trade River?

It is owned by the County Highway Agency.