US Bridges

Cth C over IH Ush 51-IH 39

Fair

Marathon County, Wisconsin · 0.9M E JCT Cth Db · Structure no. B37014300000000

Built
1972
53 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
307 ft
2 main spans
Daily traffic
490
2022 count
Owner
State
State Highway Agency

About this bridge

Cth C over IH Ush 51-IH 39 is a steel continuous stringer/multi-beam or girder carrying Cth C over IH Ush 51-IH 39 in Marathon County, Wisconsin. It was built in 1972, so it is 53 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 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 490 vehicles a day, projected to reach 490 by 2043. The structure is 307 ft (93.6 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCth C
CrossesIH Ush 51-IH 39
Location0.9M E JCT Cth Db
RouteCounty Highway 0C
CountyMarathon County
StateWisconsin
Coordinates44.71385, -89.66081
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length307 ft (93.6 m)
Longest span153 ft (46.6 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic490 (2022)
Projected traffic490 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cth C over IH Ush 51-IH 39 built?

It was built in 1972, making it 53 years old in 2025.

What condition is Cth C over IH Ush 51-IH 39 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 Cth C over IH Ush 51-IH 39 carry?

About 490 vehicles per day (2022 count).

How long is Cth C over IH Ush 51-IH 39?

The structure is 307 ft (93.6 m) long with a longest span of 153 ft (46.6 m) and a deck 41 ft wide.

Who owns Cth C over IH Ush 51-IH 39?

It is owned by the State Highway Agency.