US Bridges

Sth 70 over S Fk Flambeau River

Fair

Price County, Wisconsin · 0.2M E JCT Sth 13 · Structure no. B50000400000000

Built
1951
74 years old, rebuilt 1989
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
155 ft
3 main spans
Daily traffic
1,900
2023 count
Owner
State
State Highway Agency

About this bridge

Sth 70 over S Fk Flambeau River is a steel continuous stringer/multi-beam or girder carrying Sth 70 over S Fk Flambeau River in Price County, Wisconsin. It was built in 1951 and reconstructed in 1989, so it is 74 years old, older 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 1,900 vehicles a day, roughly 18% of them trucks, projected to reach 1,950 by 2043. The structure is 155 ft (47.1 m) long and 29 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesSth 70
CrossesS Fk Flambeau River
Location0.2M E JCT Sth 13
RouteState Highway 70
CountyPrice County
StateWisconsin
Coordinates45.87981, -90.41592
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length155 ft (47.1 m)
Longest span58 ft (17.7 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2023)
Projected traffic1,950 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 70 over S Fk Flambeau River built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1989.

What condition is Sth 70 over S Fk Flambeau 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 May 2024.

How much traffic does Sth 70 over S Fk Flambeau River carry?

About 1,900 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is Sth 70 over S Fk Flambeau River?

The structure is 155 ft (47.1 m) long with a longest span of 58 ft (17.7 m) and a deck 29 ft wide.

Who owns Sth 70 over S Fk Flambeau River?

It is owned by the State Highway Agency.