US Bridges

Sth 139 over Brule River

Fair

Florence County, Wisconsin · 1.4M N JCT Sth 70 to W · Structure no. B19001100000000

Built
1989
36 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
102 ft
1 main span
Daily traffic
1,500
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 139 over Brule River is a prestressed concrete stringer/multi-beam or girder carrying Sth 139 over Brule River in Florence County, Wisconsin. It was built in 1989, so it is 36 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 1,500 vehicles a day, roughly 11% of them trucks, projected to reach 1,880 by 2042. The structure is 102 ft (31.1 m) long and 39 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

CarriesSth 139
CrossesBrule River
Location1.4M N JCT Sth 70 to W
RouteState Highway 139
Coordinates45.98756, -88.65246
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.1 US tons
Inventory rating42.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span98 ft (29.9 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2022)
Projected traffic1,880 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 139 over Brule River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Sth 139 over Brule 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 Sth 139 over Brule River carry?

About 1,500 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Sth 139 over Brule River?

The structure is 102 ft (31.1 m) long with a longest span of 98 ft (29.9 m) and a deck 39 ft wide.

Who owns Sth 139 over Brule River?

It is owned by the State Highway Agency.