US Bridges

County RD 359 over Br of Wyaconda Rvr

Fair

Clark County, Missouri · S 16 T 63 N R 7 W · Structure no. 22492

Built
1930
95 years old, rebuilt 2007
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 359 over Br of Wyaconda Rvr is a steel stringer/multi-beam or girder carrying County RD 359 over Br of Wyaconda Rvr in Clark County, Missouri. It was built in 1930 and reconstructed in 2007, so it is 95 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 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 63 by 2044. The structure is 25 ft (7.6 m) long and 19 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty RD 359
CrossesBr of Wyaconda Rvr
LocationS 16 T 63 N R 7 W
RouteCounty Highway 359
CountyClark County
StateMissouri
Coordinates40.26658, -91.67597
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width19 ft (5.9 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic63 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 County RD 359 over Br of Wyaconda Rvr built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2007.

What condition is County RD 359 over Br of Wyaconda Rvr 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 August 2023.

How much traffic does County RD 359 over Br of Wyaconda Rvr carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 359 over Br of Wyaconda Rvr?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 19 ft wide.

Who owns County RD 359 over Br of Wyaconda Rvr?

It is owned by the County Highway Agency.