US Bridges

County RD 9720 over West Fk Spring Rv

FairPosted for load

Howell County, Missouri · S 25 T 22 N R 9 W · Structure no. 21935

Built
1935
90 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
134 ft
6 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 9720 over West Fk Spring Rv is a steel stringer/multi-beam or girder carrying County RD 9720 over West Fk Spring Rv in Howell County, Missouri. It was built in 1935, so it is 90 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2043. The structure is 134 ft (40.8 m) long and 17 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesCounty RD 9720
CrossesWest Fk Spring Rv
LocationS 25 T 22 N R 9 W
RouteCounty Highway 331
CountyHowell County
StateMissouri
Coordinates36.5445, -91.88362
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadOther
Structure length134 ft (40.8 m)
Longest span26 ft (7.9 m)
Deck width17 ft (5.3 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic39 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 9720 over West Fk Spring Rv built?

It was built in 1935, making it 90 years old in 2025.

What condition is County RD 9720 over West Fk Spring Rv 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 November 2024.

How much traffic does County RD 9720 over West Fk Spring Rv carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 9720 over West Fk Spring Rv?

The structure is 134 ft (40.8 m) long with a longest span of 26 ft (7.9 m) and a deck 17 ft wide.

Who owns County RD 9720 over West Fk Spring Rv?

It is owned by the County Highway Agency.