US Bridges

Cth HWY D over Bass Creek

Fair

Rock County, Wisconsin · 4.4M N JCT Cth Q · Structure no. B53018900000000

Built
1998
27 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
158 ft
2 main spans
Daily traffic
4,218
2024 count
Owner
County
County Highway Agency

About this bridge

Cth HWY D over Bass Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth HWY D over Bass Creek in Rock County, Wisconsin. It was built in 1998, so it is 27 years old, younger 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 4,218 vehicles a day, projected to reach 4,419 by 2043. The structure is 158 ft (48.2 m) long and 42 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

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CarriesCth HWY D
CrossesBass Creek
Location4.4M N JCT Cth Q
RouteCounty Highway 0D
CountyRock County
StateWisconsin
Coordinates42.60047, -89.07111
Functional classRural Major 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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.5 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length158 ft (48.2 m)
Longest span78 ft (23.7 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,218 (2024)
Projected traffic4,419 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 HWY D over Bass Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Cth HWY D over Bass 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 August 2024.

How much traffic does Cth HWY D over Bass Creek carry?

About 4,218 vehicles per day (2024 count).

How long is Cth HWY D over Bass Creek?

The structure is 158 ft (48.2 m) long with a longest span of 78 ft (23.7 m) and a deck 42 ft wide.

Who owns Cth HWY D over Bass Creek?

It is owned by the County Highway Agency.