US Bridges

Sth 64 over S Br Oconto River

Good

Langlade County, Wisconsin · 2.6M E JCT Sth 55 · Structure no. B34002400000000

Built
1997
28 years old
Condition
Good
inspected July 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
1,600
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 64 over S Br Oconto River is a prestressed concrete stringer/multi-beam or girder carrying Sth 64 over S Br Oconto River in Langlade County, Wisconsin. It was built in 1997, so it is 28 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 1,600 vehicles a day, roughly 11% of them trucks, projected to reach 1,920 by 2042. The structure is 52 ft (15.9 m) long and 38 ft wide. If it were closed, the detour would be 60.9 mi (98 km).

CarriesSth 64
CrossesS Br Oconto River
Location2.6M E JCT Sth 55
RouteState Highway 64
Coordinates45.19286, -88.67856
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating44.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length52 ft (15.9 m)
Longest span48 ft (14.6 m)
Deck width38 ft (11.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2022)
Projected traffic1,920 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.9 mi (98 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 64 over S Br Oconto River built?

It was built in 1997, making it 28 years old in 2025.

What condition is Sth 64 over S Br Oconto 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 July 2021.

How much traffic does Sth 64 over S Br Oconto River carry?

About 1,600 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Sth 64 over S Br Oconto River?

The structure is 52 ft (15.9 m) long with a longest span of 48 ft (14.6 m) and a deck 38 ft wide.

Who owns Sth 64 over S Br Oconto River?

It is owned by the State Highway Agency.