US Bridges

Ush 51-CENTER Ave over Rock River

Fair

Rock County, Wisconsin · 11.5M N JCT Sth 81 · Structure no. B53015300000000

Built
1990
35 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
395 ft
3 main spans
Daily traffic
17,700
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 51-CENTER Ave over Rock River is a steel continuous stringer/multi-beam or girder carrying Ush 51-CENTER Ave over Rock River in Rock County, Wisconsin. It was built in 1990, so it is 35 years old, younger 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 17,700 vehicles a day, roughly 3% of them trucks, projected to reach 21,240 by 2042. The structure is 395 ft (120.5 m) long and 75 ft wide. If it were closed, the detour would be 20.5 mi (33 km).

Location

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CarriesUsh 51-CENTER Ave
CrossesRock River
Location11.5M N JCT Sth 81
RouteU.S. Route 51
CountyRock County
StateWisconsin
Coordinates42.66967, -89.03148
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.8 US tons
Inventory rating48.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length395 ft (120.5 m)
Longest span137 ft (41.8 m)
Deck width75 ft (22.9 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,700 (2022)
Projected traffic21,240 by 2042
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed20.5 mi (33 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ush 51-CENTER Ave over Rock River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Ush 51-CENTER Ave over Rock River 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 September 2023.

How much traffic does Ush 51-CENTER Ave over Rock River carry?

About 17,700 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Ush 51-CENTER Ave over Rock River?

The structure is 395 ft (120.5 m) long with a longest span of 137 ft (41.8 m) and a deck 75 ft wide.

Who owns Ush 51-CENTER Ave over Rock River?

It is owned by the State Highway Agency.