US Bridges

Ush 51 over Br Rock River

Good

Rock County, Wisconsin · 4.1M N JCT Sth 81 · Structure no. B53012200000000

Built
1973
52 years old
Condition
Good
inspected August 2024
Type
Culvert
Steel
Length
23 ft
2 main spans
Daily traffic
9,700
2022 count
Owner
State
State Highway Agency

About this bridge

Ush 51 over Br Rock River is a steel culvert carrying Ush 51 over Br Rock River in Rock County, Wisconsin. It was built in 1973, so it is 52 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 9,700 vehicles a day, roughly 3% of them trucks, projected to reach 11,280 by 2043. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 28 mi (45 km).

CarriesUsh 51
CrossesBr Rock River
Location4.1M N JCT Sth 81
RouteU.S. Route 51
Coordinates42.56847, -89.03353
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckCorrugated steel
Main spans2
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,700 (2022)
Projected traffic11,280 by 2043
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 over Br Rock River built?

It was built in 1973, making it 52 years old in 2025.

What condition is Ush 51 over Br Rock River 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 August 2024.

How much traffic does Ush 51 over Br Rock River carry?

About 9,700 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Ush 51 over Br Rock River?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3 m).

Who owns Ush 51 over Br Rock River?

It is owned by the State Highway Agency.