US Bridges

Cth a over Cn Railroad

Fair

St. Croix County, Wisconsin · 0.1M East of JCT Sth 64 · Structure no. B55007400000000

Built
1977
48 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
6,148
2022 count
Owner
County
County Highway Agency

About this bridge

Cth a over Cn Railroad is a concrete continuous slab carrying Cth a over Cn Railroad in St. Croix County, Wisconsin. It was built in 1977, so it is 48 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 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 6,148 vehicles a day, roughly 9% of them trucks, projected to reach 6,762 by 2042. The structure is 150 ft (45.6 m) long and 42 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesCth a
CrossesCn Railroad
Location0.1M East of JCT Sth 64
RouteCounty Highway 0A
CountySt. Croix County
StateWisconsin
Coordinates45.1199, -92.58738
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.9 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length150 ft (45.6 m)
Longest span60 ft (18.3 m)
Deck width42 ft (12.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,148 (2022)
Projected traffic6,762 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cth a over Cn Railroad built?

It was built in 1977, making it 48 years old in 2025.

What condition is Cth a over Cn Railroad 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 a over Cn Railroad carry?

About 6,148 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Cth a over Cn Railroad?

The structure is 150 ft (45.6 m) long with a longest span of 60 ft (18.3 m) and a deck 42 ft wide.

Who owns Cth a over Cn Railroad?

It is owned by the County Highway Agency.