US Bridges

Sth 29 Ramp over Lrd 28th Ave

Fair

Marathon County, Wisconsin · 0.5M Xing of 51 · Structure no. B37036600000000

Built
2008
17 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
648 ft
7 main spans
Daily traffic
4,400
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 29 Ramp over Lrd 28th Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 29 Ramp over Lrd 28th Ave in Marathon County, Wisconsin. It was built in 2008, so it is 17 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 4,400 vehicles a day, projected to reach 3,300 by 2043. The structure is 648 ft (197.5 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesSth 29 Ramp
CrossesLrd 28th Ave
Location0.5M Xing of 51
RouteState Highway 29
CountyMarathon County
StateWisconsin
Coordinates44.95514, -89.66906
Functional classUrban Other Principal 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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.2 US tons
Inventory rating48.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 25 or greater
Structure length648 ft (197.5 m)
Longest span92 ft (28 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2022)
Projected traffic3,300 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 29 Ramp over Lrd 28th Ave built?

It was built in 2008, making it 17 years old in 2025.

What condition is Sth 29 Ramp over Lrd 28th Ave 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 Sth 29 Ramp over Lrd 28th Ave carry?

About 4,400 vehicles per day (2022 count).

How long is Sth 29 Ramp over Lrd 28th Ave?

The structure is 648 ft (197.5 m) long with a longest span of 92 ft (28 m) and a deck 30 ft wide.

Who owns Sth 29 Ramp over Lrd 28th Ave?

It is owned by the State Highway Agency.