US Bridges

Sth 178 over Bob CR

Good

Chippewa County, Wisconsin · At Bob Creek · Structure no. B09027200000000

Built
2005
20 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
103 ft
2 main spans
Daily traffic
2,500
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 178 over Bob CR is a concrete continuous slab carrying Sth 178 over Bob CR in Chippewa County, Wisconsin. It was built in 2005, so it is 20 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,500 vehicles a day, roughly 8% of them trucks, projected to reach 2,750 by 2042. The structure is 103 ft (31.3 m) long and 38 ft wide. If it were closed, the detour would be 17.4 mi (28 km).

Location

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CarriesSth 178
CrossesBob CR
LocationAt Bob Creek
RouteState Highway 178
CountyChippewa County
StateWisconsin
Coordinates45.13285, -91.21302
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating80.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length103 ft (31.3 m)
Longest span50 ft (15.2 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2021)
Projected traffic2,750 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed17.4 mi (28 km)
TollOn a free road
National Highway SystemNo

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 178 over Bob CR built?

It was built in 2005, making it 20 years old in 2025.

What condition is Sth 178 over Bob CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Sth 178 over Bob CR carry?

About 2,500 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Sth 178 over Bob CR?

The structure is 103 ft (31.3 m) long with a longest span of 50 ft (15.2 m) and a deck 38 ft wide.

Who owns Sth 178 over Bob CR?

It is owned by the State Highway Agency.