US Bridges

Cth S over Narrows Creek

Fair

Sauk County, Wisconsin · 0.6M E JCT Cth G · Structure no. B56014100000000

Built
1998
27 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
42 ft
1 main span
Daily traffic
195
2024 count
Owner
County
County Highway Agency

About this bridge

Cth S over Narrows Creek is a concrete slab carrying Cth S over Narrows Creek in Sauk 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 195 vehicles a day, projected to reach 214 by 2043. The structure is 42 ft (12.8 m) long and 30 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesCth S
CrossesNarrows Creek
Location0.6M E JCT Cth G
RouteCounty Highway 0S
Coordinates43.46764, -90.14468
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating66.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span39 ft (12 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic195 (2024)
Projected traffic214 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 S over Narrows Creek built?

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

What condition is Cth S over Narrows 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 Cth S over Narrows Creek carry?

About 195 vehicles per day (2024 count).

How long is Cth S over Narrows Creek?

The structure is 42 ft (12.8 m) long with a longest span of 39 ft (12 m) and a deck 30 ft wide.

Who owns Cth S over Narrows Creek?

It is owned by the County Highway Agency.