US Bridges

Sth 138 over Badfish Creek

Fair

Dane County, Wisconsin · 3.4M N JCT Ush 51 to N · Structure no. B13029500000000

Built
1975
50 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
9,200
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 138 over Badfish Creek is a prestressed concrete stringer/multi-beam or girder carrying Sth 138 over Badfish Creek in Dane 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 9,200 vehicles a day, roughly 4% of them trucks, projected to reach 11,040 by 2042. The structure is 70 ft (21.3 m) long and 42 ft wide. If it were closed, the detour would be 30.4 mi (49 km).

Location

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CarriesSth 138
CrossesBadfish Creek
Location3.4M N JCT Ush 51 to N
RouteState Highway 138
CountyDane County
StateWisconsin
Coordinates42.91874, -89.31423
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 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 rating61.2 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length70 ft (21.3 m)
Longest span65 ft (19.8 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,200 (2022)
Projected traffic11,040 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed30.4 mi (49 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 138 over Badfish Creek built?

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

What condition is Sth 138 over Badfish 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 138 over Badfish Creek carry?

About 9,200 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Sth 138 over Badfish Creek?

The structure is 70 ft (21.3 m) long with a longest span of 65 ft (19.8 m) and a deck 42 ft wide.

Who owns Sth 138 over Badfish Creek?

It is owned by the State Highway Agency.