US Bridges

Lrd N. 20th Ave over County Line Creek

Fair

Marathon County, Wisconsin · 1.8M E JCT Cth K · Structure no. P37093500000000

Built
1978
47 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
51
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lrd N. 20th Ave over County Line Creek is a prestressed concrete box beam or girders - multiple carrying Lrd N. 20th Ave over County Line Creek in Marathon County, Wisconsin. It was built in 1978, so it is 47 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 51 vehicles a day, projected to reach 55 by 2043. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesLrd N. 20th Ave
CrossesCounty Line Creek
Location1.8M E JCT Cth K
RouteCity Street 0
CountyMarathon County
StateWisconsin
Coordinates45.10951, -89.66171
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 rating69.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2024)
Projected traffic55 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Lrd N. 20th Ave over County Line Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Lrd N. 20th Ave over County Line 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 September 2024.

How much traffic does Lrd N. 20th Ave over County Line Creek carry?

About 51 vehicles per day (2024 count).

How long is Lrd N. 20th Ave over County Line Creek?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Lrd N. 20th Ave over County Line Creek?

It is owned by the City or Municipal Highway Agency.