US Bridges

Rt N S over Spring Valley

Fair

Shannon County, Missouri · S 34 T 30 N R 5 W · Structure no. 9948

Built
1937
88 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
75 ft
10 main spans
Daily traffic
55
2024 count
Owner
State
State Highway Agency

About this bridge

Rt N S over Spring Valley is a concrete continuous culvert carrying Rt N S over Spring Valley in Shannon County, Missouri. It was built in 1937, so it is 88 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.

It carries about 55 vehicles a day, roughly 9% of them trucks, projected to reach 77 by 2044. The structure is 75 ft (22.8 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRt N S
CrossesSpring Valley
LocationS 34 T 30 N R 5 W
RouteState Highway 0N
CountyShannon County
StateMissouri
Coordinates37.25693, -91.48263
Functional classRural Minor Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating26.8 US tons
Inventory rating15.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadOther
Structure length75 ft (22.8 m)
Longest span6 ft (1.8 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2024)
Projected traffic77 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$450,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt N S over Spring Valley built?

It was built in 1937, making it 88 years old in 2025.

What condition is Rt N S 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 December 2024.

How much traffic does Rt N S over Spring Valley carry?

About 55 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Rt N S over Spring Valley?

The structure is 75 ft (22.8 m) long with a longest span of 6 ft (1.8 m) and a deck 21 ft wide.

Who owns Rt N S over Spring Valley?

It is owned by the State Highway Agency.