US Bridges

County RD 425 over Trib of Drywood CR

Good

Vernon County, Missouri · S 4 T 34 N R 33 W · Structure no. 24753

Built
1991
34 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 425 over Trib of Drywood CR is a steel stringer/multi-beam or girder carrying County RD 425 over Trib of Drywood CR in Vernon County, Missouri. It was built in 1991, so it is 34 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 56 ft (17.1 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCounty RD 425
CrossesTrib of Drywood CR
LocationS 4 T 34 N R 33 W
RouteCounty Highway 545
Coordinates37.73506, -94.56424
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating30.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length56 ft (17.1 m)
Longest span52 ft (15.8 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County RD 425 over Trib of Drywood CR built?

It was built in 1991, making it 34 years old in 2025.

What condition is County RD 425 over Trib of Drywood 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 February 2024.

How much traffic does County RD 425 over Trib of Drywood CR carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 425 over Trib of Drywood CR?

The structure is 56 ft (17.1 m) long with a longest span of 52 ft (15.8 m) and a deck 18 ft wide.

Who owns County RD 425 over Trib of Drywood CR?

It is owned by the County Highway Agency.