US Bridges

Ush 12-STH 27 over Union Pacific RR

Fair

Eau Claire County, Wisconsin · 5.7M E JCT Cth M to S · Structure no. B18006100000000

Built
1962
63 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
333 ft
3 main spans
Daily traffic
1,400
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 12-STH 27 over Union Pacific RR is a steel continuous stringer/multi-beam or girder carrying Ush 12-STH 27 over Union Pacific RR in Eau Claire County, Wisconsin. It was built in 1962, so it is 63 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 1,400 vehicles a day, roughly 10% of them trucks, projected to reach 1,680 by 2042. The structure is 333 ft (101.5 m) long and 35 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

Location

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CarriesUsh 12-STH 27
CrossesUnion Pacific RR
Location5.7M E JCT Cth M to S
RouteU.S. Route 12
CountyEau Claire County
StateWisconsin
Coordinates44.61558, -90.98542
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 alignment6: Equal to present minimum criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length333 ft (101.5 m)
Longest span127 ft (38.7 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2022)
Projected traffic1,680 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed15.5 mi (25 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 Ush 12-STH 27 over Union Pacific RR built?

It was built in 1962, making it 63 years old in 2025.

What condition is Ush 12-STH 27 over Union Pacific 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 July 2023.

How much traffic does Ush 12-STH 27 over Union Pacific RR carry?

About 1,400 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Ush 12-STH 27 over Union Pacific RR?

The structure is 333 ft (101.5 m) long with a longest span of 127 ft (38.7 m) and a deck 35 ft wide.

Who owns Ush 12-STH 27 over Union Pacific RR?

It is owned by the State Highway Agency.