US Bridges

Cth N over Rush River

Fair

Pierce County, Wisconsin · 0.1M N JCT Cth G · Structure no. P47016500000000

Built
1976
49 years old, rebuilt 2013
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
505
2022 count
Owner
County
County Highway Agency

About this bridge

Cth N over Rush River is a prestressed concrete stringer/multi-beam or girder carrying Cth N over Rush River in Pierce County, Wisconsin. It was built in 1976 and reconstructed in 2013, so it is 49 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 505 vehicles a day, projected to reach 555 by 2042. The structure is 96 ft (29.4 m) long and 30 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesCth N
CrossesRush River
Location0.1M N JCT Cth G
RouteCounty Highway 0N
CountyPierce County
StateWisconsin
Coordinates44.77032, -92.34364
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating54 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length96 ft (29.4 m)
Longest span95 ft (29.1 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic505 (2022)
Projected traffic555 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$481,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth N over Rush River built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2013.

What condition is Cth N over Rush River 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 April 2023.

How much traffic does Cth N over Rush River carry?

About 505 vehicles per day (2022 count).

How long is Cth N over Rush River?

The structure is 96 ft (29.4 m) long with a longest span of 95 ft (29.1 m) and a deck 30 ft wide.

Who owns Cth N over Rush River?

It is owned by the County Highway Agency.