US Bridges

County RD 312 over Clark Crk

FairPosted for load

Wayne County, Missouri · S 18 T 29 N R 5 E · Structure no. 18803

Built
1920
105 years old
Condition
Fair
inspected December 2023
Type
Truss - Thru
Steel
Length
141 ft
2 main spans
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 312 over Clark Crk is a steel truss - thru carrying County RD 312 over Clark Crk in Wayne County, Missouri. It was built in 1920, so it is 105 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 125 by 2044. The structure is 141 ft (43 m) long and 19 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty RD 312
CrossesClark Crk
LocationS 18 T 29 N R 5 E
RouteCounty Highway 200
CountyWayne County
StateMissouri
Coordinates37.19103, -90.53873
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length141 ft (43 m)
Longest span91 ft (27.7 m)
Deck width19 ft (5.8 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic125 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 312 over Clark Crk built?

It was built in 1920, making it 105 years old in 2025.

What condition is County RD 312 over Clark Crk 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 December 2023.

How much traffic does County RD 312 over Clark Crk carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 312 over Clark Crk?

The structure is 141 ft (43 m) long with a longest span of 91 ft (27.7 m) and a deck 19 ft wide.

Who owns County RD 312 over Clark Crk?

It is owned by the County Highway Agency.