US Bridges

County RD over Spring Valley

Fair

Shannon County, Missouri · S 19 T 29 N R 6 W · Structure no. 20165

Built
1945
80 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
27 ft
9 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

County RD over Spring Valley is a concrete culvert carrying County RD over Spring Valley in Shannon County, Missouri. It was built in 1945, so it is 80 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 60 by 2043. The structure is 27 ft (8.2 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCounty RD
CrossesSpring Valley
LocationS 19 T 29 N R 6 W
RouteCounty Highway 249
CountyShannon County
StateMissouri
Coordinates37.1688, -91.6404
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadOther
Structure length27 ft (8.2 m)
Longest span2 ft (0.6 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic60 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 over Spring Valley built?

It was built in 1945, making it 80 years old in 2025.

What condition is County RD over Spring Valley 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 January 2025.

How much traffic does County RD over Spring Valley carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD over Spring Valley?

The structure is 27 ft (8.2 m) long with a longest span of 2 ft (0.6 m) and a deck 12 ft wide.

Who owns County RD over Spring Valley?

It is owned by the County Highway Agency.