US Bridges

Sth 146 over Cmstpp RR

Fair

Columbia County, Wisconsin · 0.8M N JCT Sth 16 · Structure no. B11002700000000

Built
1976
49 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
222 ft
3 main spans
Daily traffic
1,200
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 146 over Cmstpp RR is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 146 over Cmstpp RR in Columbia County, Wisconsin. It was built in 1976, 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 1,200 vehicles a day, roughly 5% of them trucks, projected to reach 1,440 by 2041. The structure is 222 ft (67.6 m) long and 37 ft wide. If it were closed, the detour would be 38.5 mi (62 km).

CarriesSth 146
CrossesCmstpp RR
Location0.8M N JCT Sth 16
RouteState Highway 146
Coordinates43.40179, -89.09455
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.4 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length222 ft (67.6 m)
Longest span75 ft (22.9 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2021)
Projected traffic1,440 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed38.5 mi (62 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 146 over Cmstpp RR built?

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

What condition is Sth 146 over Cmstpp RR 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 June 2023.

How much traffic does Sth 146 over Cmstpp RR carry?

About 1,200 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Sth 146 over Cmstpp RR?

The structure is 222 ft (67.6 m) long with a longest span of 75 ft (22.9 m) and a deck 37 ft wide.

Who owns Sth 146 over Cmstpp RR?

It is owned by the State Highway Agency.