US Bridges

Cth Y over Chippewa River 15

Fair

Chippewa County, Wisconsin · 0.1 M E Sth 178 · Structure no. B09012300000000

Built
1986
39 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
766 ft
5 main spans
Daily traffic
1,300
2023 count
Owner
County
County Highway Agency

About this bridge

Cth Y over Chippewa River 15 is a steel continuous stringer/multi-beam or girder carrying Cth Y over Chippewa River 15 in Chippewa County, Wisconsin. It was built in 1986, so it is 39 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 5 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 1,300 vehicles a day, projected to reach 1,166 by 2042. The structure is 766 ft (233.5 m) long and 32 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCth Y
CrossesChippewa River 15
Location0.1 M E Sth 178
RouteCounty Highway 0Y
CountyChippewa County
StateWisconsin
Coordinates45.04917, -91.27583
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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating68.5 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length766 ft (233.5 m)
Longest span170 ft (51.8 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic1,166 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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$3.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Y over Chippewa River 15 built?

It was built in 1986, making it 39 years old in 2025.

What condition is Cth Y over Chippewa River 15 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 2023.

How much traffic does Cth Y over Chippewa River 15 carry?

About 1,300 vehicles per day (2023 count).

How long is Cth Y over Chippewa River 15?

The structure is 766 ft (233.5 m) long with a longest span of 170 ft (51.8 m) and a deck 32 ft wide.

Who owns Cth Y over Chippewa River 15?

It is owned by the County Highway Agency.