US Bridges

Sth 49 over Spranger Creek

Fair

Marathon County, Wisconsin · 2.2M N JCT Sth 153 · Structure no. B37023800000000

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
37 ft
1 main span
Daily traffic
2,400
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 49 over Spranger Creek is a concrete slab carrying Sth 49 over Spranger Creek in Marathon County, Wisconsin. It was built in 1987, so it is 38 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 2,400 vehicles a day, roughly 8% of them trucks, projected to reach 2,440 by 2042. The structure is 37 ft (11.4 m) long and 39 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

Open in Google Maps
CarriesSth 49
CrossesSpranger Creek
Location2.2M N JCT Sth 153
RouteState Highway 49
CountyMarathon County
StateWisconsin
Coordinates44.8165, -89.24429
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum 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 rating73.9 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span35 ft (10.8 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2022)
Projected traffic2,440 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 49 over Spranger Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Sth 49 over Spranger Creek 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 49 over Spranger Creek carry?

About 2,400 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 49 over Spranger Creek?

The structure is 37 ft (11.4 m) long with a longest span of 35 ft (10.8 m) and a deck 39 ft wide.

Who owns Sth 49 over Spranger Creek?

It is owned by the State Highway Agency.