US Bridges

Sth 35 over Slough

Poor

Buffalo County, Wisconsin · 0.2M N JCT Sth 25 to N · Structure no. B06089800000000

Built
1933
92 years old, rebuilt 1991
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
526 ft
8 main spans
Daily traffic
2,100
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 35 over Slough is a steel stringer/multi-beam or girder carrying Sth 35 over Slough in Buffalo County, Wisconsin. It was built in 1933 and reconstructed in 1991, so it is 92 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,100 vehicles a day, roughly 8% of them trucks, projected to reach 2,520 by 2043. The structure is 526 ft (160.3 m) long and 33 ft wide. If it were closed, the detour would be 78.9 mi (127 km).

Location

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CarriesSth 35
CrossesSlough
Location0.2M N JCT Sth 25 to N
RouteState Highway 35
CountyBuffalo County
StateWisconsin
Coordinates44.43409, -92.02416
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating54 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans8
Design loadH 20
Structure length526 ft (160.3 m)
Longest span65 ft (19.9 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2022)
Projected traffic2,520 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed78.9 mi (127 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 35 over Slough built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1991.

What condition is Sth 35 over Slough in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Sth 35 over Slough carry?

About 2,100 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 35 over Slough?

The structure is 526 ft (160.3 m) long with a longest span of 65 ft (19.9 m) and a deck 33 ft wide.

Who owns Sth 35 over Slough?

It is owned by the State Highway Agency.