US Bridges

Cth O over Sth 29

Good

Marathon County, Wisconsin · 3.33 MI E JCT Sth 107 · Structure no. B37040800000000

Built
2013
12 years old
Condition
Good
inspected June 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
160 ft
1 main span
Daily traffic
1,000
2022 count
Owner
State
State Highway Agency

About this bridge

Cth O over Sth 29 is a prestressed concrete stringer/multi-beam or girder carrying Cth O over Sth 29 in Marathon County, Wisconsin. It was built in 2013, so it is 12 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,000 vehicles a day, roughly 4% of them trucks, projected to reach 3,100 by 2041. The structure is 160 ft (48.9 m) long and 82 ft wide.

CarriesCth O
CrossesSth 29
Location3.33 MI E JCT Sth 107
RouteCounty Highway 0O
Coordinates44.94398, -89.78493
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating48.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length160 ft (48.9 m)
Longest span155 ft (47.2 m)
Deck width82 ft (25.1 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2022)
Projected traffic3,100 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkNon-Interstate STRAHNET route

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 O over Sth 29 built?

It was built in 2013, making it 12 years old in 2025.

What condition is Cth O over Sth 29 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2022.

How much traffic does Cth O over Sth 29 carry?

About 1,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Cth O over Sth 29?

The structure is 160 ft (48.9 m) long with a longest span of 155 ft (47.2 m) and a deck 82 ft wide.

Who owns Cth O over Sth 29?

It is owned by the State Highway Agency.