US Bridges

Cth N over Rush River

Fair

St. Croix County, Wisconsin · 0.1M W JCT Ush 63 · Structure no. B55011100000000

Built
1990
35 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
34 ft
1 main span
Daily traffic
812
2022 count
Owner
County
County Highway Agency

About this bridge

Cth N over Rush River is a concrete slab carrying Cth N over Rush River in St. Croix County, Wisconsin. It was built in 1990, so it is 35 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 812 vehicles a day, projected to reach 839 by 2042. The structure is 34 ft (10.3 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCth N
CrossesRush River
Location0.1M W JCT Ush 63
RouteCounty Highway 0N
CountySt. Croix County
StateWisconsin
Coordinates44.9201, -92.37615
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.8 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.3 m)
Longest span32 ft (9.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic812 (2022)
Projected traffic839 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 N over Rush River built?

It was built in 1990, making it 35 years old in 2025.

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 October 2023.

How much traffic does Cth N over Rush River carry?

About 812 vehicles per day (2022 count).

How long is Cth N over Rush River?

The structure is 34 ft (10.3 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.

Who owns Cth N over Rush River?

It is owned by the County Highway Agency.