US Bridges

Cth X over Sth 29

Fair

Marathon County, Wisconsin · 4.5M N JCT Cth Xx to W · Structure no. B37017700000000

Built
1989
36 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
234 ft
2 main spans
Daily traffic
15,900
2023 count
Owner
State
State Highway Agency

About this bridge

Cth X over Sth 29 is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth X over Sth 29 in Marathon County, Wisconsin. It was built in 1989, so it is 36 years old, younger 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 15,900 vehicles a day, projected to reach 15,900 by 2043. The structure is 234 ft (71.2 m) long and 73 ft wide.

Location

Open in Google Maps
CarriesCth X
CrossesSth 29
Location4.5M N JCT Cth Xx to W
RouteCounty Highway 0X
CountyMarathon County
StateWisconsin
Coordinates44.89424, -89.57235
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.7 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length234 ft (71.2 m)
Longest span115 ft (35.1 m)
Deck width73 ft (22.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,900 (2023)
Projected traffic15,900 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 X over Sth 29 built?

It was built in 1989, making it 36 years old in 2025.

What condition is Cth X over Sth 29 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 Cth X over Sth 29 carry?

About 15,900 vehicles per day (2023 count).

How long is Cth X over Sth 29?

The structure is 234 ft (71.2 m) long with a longest span of 115 ft (35.1 m) and a deck 73 ft wide.

Who owns Cth X over Sth 29?

It is owned by the State Highway Agency.