US Bridges

Sth 93 over Chimney Rock Creek

Fair

Trempealeau County, Wisconsin · 1.5M N JCT Cth Vv · Structure no. B61005300000000

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
4,000
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 93 over Chimney Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying Sth 93 over Chimney Rock Creek in Trempealeau County, Wisconsin. It was built in 1971, so it is 54 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 4,000 vehicles a day, roughly 11% of them trucks, projected to reach 4,440 by 2043. The structure is 71 ft (21.5 m) long and 42 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

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CarriesSth 93
CrossesChimney Rock Creek
Location1.5M N JCT Cth Vv
RouteState Highway 93
CountyTrempealeau County
StateWisconsin
Coordinates44.47772, -91.41919
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 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 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 rating48.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length71 ft (21.5 m)
Longest span68 ft (20.7 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2022)
Projected traffic4,440 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Sth 93 over Chimney Rock Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Sth 93 over Chimney Rock 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 October 2024.

How much traffic does Sth 93 over Chimney Rock Creek carry?

About 4,000 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Sth 93 over Chimney Rock Creek?

The structure is 71 ft (21.5 m) long with a longest span of 68 ft (20.7 m) and a deck 42 ft wide.

Who owns Sth 93 over Chimney Rock Creek?

It is owned by the State Highway Agency.