US Bridges

Acid Mine RD over Winsel CR

Good

Franklin County, Missouri · S 33 T 41 N R 2 W · Structure no. 31376

Built
2006
19 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
1,200
2023 count
Owner
County
County Highway Agency

About this bridge

Acid Mine RD over Winsel CR is a prestressed concrete stringer/multi-beam or girder carrying Acid Mine RD over Winsel CR in Franklin County, Missouri. It was built in 2006, so it is 19 years old, younger than the Missouri average of 45.1 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 1,200 vehicles a day, roughly 10% of them trucks, projected to reach 1,920 by 2043. The structure is 70 ft (21.3 m) long and 37 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesAcid Mine RD
CrossesWinsel CR
LocationS 33 T 41 N R 2 W
RouteCounty Highway 311
Coordinates38.24853, -91.15333
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span67 ft (20.4 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2023)
Projected traffic1,920 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Acid Mine RD over Winsel CR built?

It was built in 2006, making it 19 years old in 2025.

What condition is Acid Mine RD over Winsel CR 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 March 2023.

How much traffic does Acid Mine RD over Winsel CR carry?

About 1,200 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Acid Mine RD over Winsel CR?

The structure is 70 ft (21.3 m) long with a longest span of 67 ft (20.4 m) and a deck 37 ft wide.

Who owns Acid Mine RD over Winsel CR?

It is owned by the County Highway Agency.