US Bridges

Cth Bb over LA Crosse River

Poor

Monroe County, Wisconsin · 0.3M W JCT Sth 21 · Structure no. P41094300000000

Built
1972
53 years old
Condition
Poor
inspected June 2024
Type
Channel Beam
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
272
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Bb over LA Crosse River is a prestressed concrete channel beam carrying Cth Bb over LA Crosse River in Monroe County, Wisconsin. It was built in 1972, so it is 53 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.

It carries about 272 vehicles a day, projected to reach 299 by 2043. The structure is 43 ft (13 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCth Bb
CrossesLA Crosse River
Location0.3M W JCT Sth 21
RouteCounty Highway 0BB
CountyMonroe County
StateWisconsin
Coordinates44.00037, -90.72412
Functional classRural Local

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating19.6 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length43 ft (13 m)
Longest span41 ft (12.6 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic272 (2022)
Projected traffic299 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$218,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Bb over LA Crosse River built?

It was built in 1972, making it 53 years old in 2025.

What condition is Cth Bb over LA Crosse River 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 June 2024.

How much traffic does Cth Bb over LA Crosse River carry?

About 272 vehicles per day (2022 count).

How long is Cth Bb over LA Crosse River?

The structure is 43 ft (13 m) long with a longest span of 41 ft (12.6 m) and a deck 29 ft wide.

Who owns Cth Bb over LA Crosse River?

It is owned by the County Highway Agency.