US Bridges

Lrd Annaton RD over Platte River

Fair

Grant County, Wisconsin · 0.5M N JCT Cth E · Structure no. P22023700000000

Built
1949
76 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
1 main span
Daily traffic
107
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd Annaton RD over Platte River is a steel stringer/multi-beam or girder carrying Lrd Annaton RD over Platte River in Grant County, Wisconsin. It was built in 1949, so it is 76 years old, older 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 107 vehicles a day, projected to reach 117 by 2042. The structure is 70 ft (21.2 m) long and 20 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesLrd Annaton RD
CrossesPlatte River
Location0.5M N JCT Cth E
RouteCity Street 0
CountyGrant County
StateWisconsin
Coordinates42.91211, -90.53772
Functional classRural Local

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.2 m)
Longest span69 ft (21 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic107 (2022)
Projected traffic117 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lrd Annaton RD over Platte River built?

It was built in 1949, making it 76 years old in 2025.

What condition is Lrd Annaton RD over Platte 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 March 2023.

How much traffic does Lrd Annaton RD over Platte River carry?

About 107 vehicles per day (2022 count).

How long is Lrd Annaton RD over Platte River?

The structure is 70 ft (21.2 m) long with a longest span of 69 ft (21 m) and a deck 20 ft wide.

Who owns Lrd Annaton RD over Platte River?

It is owned by the Town or Township Highway Agency.