US Bridges

Ush 51-CENTER Ave over Union Pacific RR

Poor

Rock County, Wisconsin · 11.3M N JCT Sth 81 · Structure no. B53013500000000

Built
1982
43 years old
Condition
Poor
inspected August 2024
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
14,600
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ush 51-CENTER Ave over Union Pacific RR is a concrete slab carrying Ush 51-CENTER Ave over Union Pacific RR in Rock County, Wisconsin. It was built in 1982, so it is 43 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 14,600 vehicles a day, roughly 10% of them trucks, projected to reach 15,334 by 2043. The structure is 28 ft (8.5 m) long and 72 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesUsh 51-CENTER Ave
CrossesUnion Pacific RR
Location11.3M N JCT Sth 81
RouteU.S. Route 51
CountyRock County
StateWisconsin
Coordinates42.66667, -89.03167
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.1 m)
Deck width72 ft (21.9 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2022)
Projected traffic15,334 by 2043
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$313,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ush 51-CENTER Ave over Union Pacific RR built?

It was built in 1982, making it 43 years old in 2025.

What condition is Ush 51-CENTER Ave over Union Pacific RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Ush 51-CENTER Ave over Union Pacific RR carry?

About 14,600 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Ush 51-CENTER Ave over Union Pacific RR?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.1 m) and a deck 72 ft wide.

Who owns Ush 51-CENTER Ave over Union Pacific RR?

It is owned by the City or Municipal Highway Agency.