US Bridges

South O Street over Tarr Creek

Good

Monroe County, Wisconsin · So. O ST over Tarr Creek · Structure no. DAPFORCOY0BR001

Built
1996
29 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
2,000
2018 count
Owner
Federal
Army

About this bridge

South O Street over Tarr Creek is a prestressed concrete stringer/multi-beam or girder carrying South O Street over Tarr Creek in Monroe County, Wisconsin. It was built in 1996, so it is 29 years old, younger 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 2,000 vehicles a day, roughly 10% of them trucks, projected to reach 2,000 by 2046. The structure is 58 ft (17.6 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSouth O Street
CrossesTarr Creek
LocationSo. O ST over Tarr Creek
Coordinates44.01219, -90.67475
Functional classUrban Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating60.4 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length58 ft (17.6 m)
Longest span56 ft (17.1 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2018)
Projected traffic2,000 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$2,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was South O Street over Tarr Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is South O Street over Tarr Creek 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 September 2024.

How much traffic does South O Street over Tarr Creek carry?

About 2,000 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is South O Street over Tarr Creek?

The structure is 58 ft (17.6 m) long with a longest span of 56 ft (17.1 m) and a deck 38 ft wide.

Who owns South O Street over Tarr Creek?

It is owned by the Army.