US Bridges

Ush 12/18-W Beltli over Cmstpp RR

Good

Dane County, Wisconsin · 0.1M E JCT Cth Mc · Structure no. B13028000000000

Built
1975
50 years old, rebuilt 1988
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
224 ft
3 main spans
Daily traffic
131,000
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 12/18-W Beltli over Cmstpp RR is a steel continuous stringer/multi-beam or girder carrying Ush 12/18-W Beltli over Cmstpp RR in Dane County, Wisconsin. It was built in 1975 and reconstructed in 1988, so it is 50 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 131,000 vehicles a day, roughly 3% of them trucks, projected to reach 157,200 by 2042. The structure is 224 ft (68.2 m) long and 142 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

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CarriesUsh 12/18-W Beltli
CrossesCmstpp RR
Location0.1M E JCT Cth Mc
RouteU.S. Route 12
CountyDane County
StateWisconsin
Coordinates43.04334, -89.3661
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length224 ft (68.2 m)
Longest span82 ft (25.1 m)
Deck width142 ft (43.3 m)
Roadway width136 ft (41.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic131,000 (2022)
Projected traffic157,200 by 2042
Trucks3%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemYes

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 Ush 12/18-W Beltli over Cmstpp RR built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1988.

What condition is Ush 12/18-W Beltli over Cmstpp RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Ush 12/18-W Beltli over Cmstpp RR carry?

About 131,000 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Ush 12/18-W Beltli over Cmstpp RR?

The structure is 224 ft (68.2 m) long with a longest span of 82 ft (25.1 m) and a deck 142 ft wide.

Who owns Ush 12/18-W Beltli over Cmstpp RR?

It is owned by the State Highway Agency.