US Bridges

Sth 29 EB over Lrd 48th Ave

Fair

Marathon County, Wisconsin · 3.5M E JCT Cth O · Structure no. B37012200000000

Built
1971
54 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
148 ft
3 main spans
Daily traffic
25,100
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 29 EB over Lrd 48th Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 29 EB over Lrd 48th Ave in Marathon County, Wisconsin. It was built in 1971, so it is 54 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 25,100 vehicles a day, roughly 2% of them trucks, projected to reach 15,969 by 2043. The structure is 148 ft (45 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSth 29 EB
CrossesLrd 48th Ave
Location3.5M E JCT Cth O
RouteState Highway 29
CountyMarathon County
StateWisconsin
Coordinates44.95385, -89.69689
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length148 ft (45 m)
Longest span71 ft (21.6 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,100 (2022)
Projected traffic15,969 by 2043
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 29 EB over Lrd 48th Ave built?

It was built in 1971, making it 54 years old in 2025.

What condition is Sth 29 EB over Lrd 48th Ave 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 June 2024.

How much traffic does Sth 29 EB over Lrd 48th Ave carry?

About 25,100 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Sth 29 EB over Lrd 48th Ave?

The structure is 148 ft (45 m) long with a longest span of 71 ft (21.6 m) and a deck 43 ft wide.

Who owns Sth 29 EB over Lrd 48th Ave?

It is owned by the State Highway Agency.