US Bridges

Lrd Slabtown RD over Blake Fork

Good

Grant County, Wisconsin · 0.1M S JCT Cth a · Structure no. P22020000000000

Built
1975
50 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
102
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd Slabtown RD over Blake Fork is a prestressed concrete stringer/multi-beam or girder carrying Lrd Slabtown RD over Blake Fork in Grant County, Wisconsin. It was built in 1975, so it is 50 years old, older 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 102 vehicles a day, projected to reach 112 by 2042. The structure is 66 ft (20.2 m) long and 26 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

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CarriesLrd Slabtown RD
CrossesBlake Fork
Location0.1M S JCT Cth a
RouteCity Street 0
CountyGrant County
StateWisconsin
Coordinates42.88592, -90.88947
Functional classRural Local

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating77.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length66 ft (20.2 m)
Longest span64 ft (19.5 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102 (2022)
Projected traffic112 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$285,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lrd Slabtown RD over Blake Fork built?

It was built in 1975, making it 50 years old in 2025.

What condition is Lrd Slabtown RD over Blake Fork 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 November 2023.

How much traffic does Lrd Slabtown RD over Blake Fork carry?

About 102 vehicles per day (2022 count).

How long is Lrd Slabtown RD over Blake Fork?

The structure is 66 ft (20.2 m) long with a longest span of 64 ft (19.5 m) and a deck 26 ft wide.

Who owns Lrd Slabtown RD over Blake Fork?

It is owned by the Town or Township Highway Agency.