US Bridges

Sth 77-LAKE DR over Bad River

Fair

Ashland County, Wisconsin · 0.2M E JCT Sth 13 to N · Structure no. B02001500000000

Built
1975
50 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
46 ft
1 main span
Daily traffic
2,100
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 77-LAKE DR over Bad River is a concrete slab carrying Sth 77-LAKE DR over Bad River in Ashland County, Wisconsin. It was built in 1975, so it is 50 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 5 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 2,100 vehicles a day, roughly 8% of them trucks, projected to reach 2,700 by 2042. The structure is 46 ft (14 m) long and 48 ft wide. If it were closed, the detour would be 28.6 mi (46 km).

Location

Open in Google Maps
CarriesSth 77-LAKE DR
CrossesBad River
Location0.2M E JCT Sth 13 to N
RouteState Highway 77
CountyAshland County
StateWisconsin
Coordinates46.3238, -90.65765
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating87.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length46 ft (14 m)
Longest span45 ft (13.7 m)
Deck width48 ft (14.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2022)
Projected traffic2,700 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed28.6 mi (46 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 77-LAKE DR over Bad River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Sth 77-LAKE DR over Bad 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 October 2023.

How much traffic does Sth 77-LAKE DR over Bad River carry?

About 2,100 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 77-LAKE DR over Bad River?

The structure is 46 ft (14 m) long with a longest span of 45 ft (13.7 m) and a deck 48 ft wide.

Who owns Sth 77-LAKE DR over Bad River?

It is owned by the State Highway Agency.