US Bridges

Lrd South RD over Br Big Rib River

Fair

Marathon County, Wisconsin · 0.9M E JCT Cth B · Structure no. P37024400000000

Built
1938
87 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
24
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd South RD over Br Big Rib River is a steel stringer/multi-beam or girder carrying Lrd South RD over Br Big Rib River in Marathon County, Wisconsin. It was built in 1938, so it is 87 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 24 vehicles a day, projected to reach 24 by 2043. The structure is 28 ft (8.6 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLrd South RD
CrossesBr Big Rib River
Location0.9M E JCT Cth B
RouteCity Street 0
CountyMarathon County
StateWisconsin
Coordinates44.92332, -89.82145
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment6: Equal to present minimum criteria
Operating rating50.4 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.6 m)
Longest span27 ft (8.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2024)
Projected traffic24 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 South RD over Br Big Rib River built?

It was built in 1938, making it 87 years old in 2025.

What condition is Lrd South RD over Br Big Rib 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 2024.

How much traffic does Lrd South RD over Br Big Rib River carry?

About 24 vehicles per day (2024 count).

How long is Lrd South RD over Br Big Rib River?

The structure is 28 ft (8.6 m) long with a longest span of 27 ft (8.1 m) and a deck 24 ft wide.

Who owns Lrd South RD over Br Big Rib River?

It is owned by the Town or Township Highway Agency.