US Bridges

Sth 29 WB over Pet Brook

Good

Marathon County, Wisconsin · 2.3M W JCT Cth S · Structure no. B37029300000000

Built
1998
27 years old
Condition
Good
inspected September 2022
Type
Slab
Concrete
Length
49 ft
1 main span
Daily traffic
8,700
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 29 WB over Pet Brook is a concrete slab carrying Sth 29 WB over Pet Brook in Marathon County, Wisconsin. It was built in 1998, so it is 27 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 8,700 vehicles a day, projected to reach 14,427 by 2041. The structure is 49 ft (14.9 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSth 29 WB
CrossesPet Brook
Location2.3M W JCT Cth S
RouteState Highway 29
Coordinates44.9446, -89.95192
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span46 ft (14 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2021)
Projected traffic14,427 by 2041
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 29 WB over Pet Brook built?

It was built in 1998, making it 27 years old in 2025.

What condition is Sth 29 WB over Pet Brook 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 September 2022.

How much traffic does Sth 29 WB over Pet Brook carry?

About 8,700 vehicles per day (2021 count).

How long is Sth 29 WB over Pet Brook?

The structure is 49 ft (14.9 m) long with a longest span of 46 ft (14 m) and a deck 42 ft wide.

Who owns Sth 29 WB over Pet Brook?

It is owned by the State Highway Agency.