US Bridges

Cth II over Bostwick Creek

PoorPosted for load

La Crosse County, Wisconsin · 0.2M N JCT Cth I · Structure no. B32058000000000

Built
1976
49 years old
Condition
Poor
inspected February 2025
Type
Slab
Wood or Timber
Length
47 ft
3 main spans
Daily traffic
250
2021 count
Owner
County
County Highway Agency

About this bridge

Cth II over Bostwick Creek is a wood or timber slab carrying Cth II over Bostwick Creek in La Crosse County, Wisconsin. It was built in 1976, so it is 49 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 other load-capacity restriction.

It carries about 250 vehicles a day, projected to reach 235 by 2044. The structure is 47 ft (14.3 m) long and 30 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

CarriesCth II
CrossesBostwick Creek
Location0.2M N JCT Cth I
RouteCounty Highway 0II
Coordinates43.82483, -91.0255
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
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusPosted for other load-capacity 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.8 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length47 ft (14.3 m)
Longest span18 ft (5.6 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2021)
Projected traffic235 by 2044
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$267,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth II over Bostwick Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Cth II over Bostwick 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 February 2025.

How much traffic does Cth II over Bostwick Creek carry?

About 250 vehicles per day (2021 count).

How long is Cth II over Bostwick Creek?

The structure is 47 ft (14.3 m) long with a longest span of 18 ft (5.6 m) and a deck 30 ft wide.

Who owns Cth II over Bostwick Creek?

It is owned by the County Highway Agency.