US Bridges

Sth 29/42-MILWAUKE over Kewaunee River

Fair

Kewaunee County, Wisconsin · 0.2M E JCT Sth 42 to S · Structure no. B31002300000000

Built
1985
40 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
623 ft
10 main spans
Daily traffic
5,700
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 29/42-MILWAUKE over Kewaunee River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 29/42-MILWAUKE over Kewaunee River in Kewaunee County, Wisconsin. It was built in 1985, so it is 40 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 5,700 vehicles a day, roughly 6% of them trucks, projected to reach 6,590 by 2043. The structure is 623 ft (189.8 m) long and 45 ft wide. If it were closed, the detour would be 43.5 mi (70 km).

Location

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CarriesSth 29/42-MILWAUKE
CrossesKewaunee River
Location0.2M E JCT Sth 42 to S
RouteState Highway 29
CountyKewaunee County
StateWisconsin
Coordinates44.46238, -87.50387
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length623 ft (189.8 m)
Longest span62 ft (18.9 m)
Deck width45 ft (13.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,700 (2022)
Projected traffic6,590 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed43.5 mi (70 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 29/42-MILWAUKE over Kewaunee River built?

It was built in 1985, making it 40 years old in 2025.

What condition is Sth 29/42-MILWAUKE over Kewaunee 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 September 2024.

How much traffic does Sth 29/42-MILWAUKE over Kewaunee River carry?

About 5,700 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Sth 29/42-MILWAUKE over Kewaunee River?

The structure is 623 ft (189.8 m) long with a longest span of 62 ft (18.9 m) and a deck 45 ft wide.

Who owns Sth 29/42-MILWAUKE over Kewaunee River?

It is owned by the State Highway Agency.