US Bridges

County RD 913 over Unnamed CR

Good

Audrain County, Missouri · S 3 T 50 N R 9 W · Structure no. 36372

Built
2019
6 years old
Condition
Good
inspected April 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
30 ft
1 main span
Daily traffic
10
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 913 over Unnamed CR is a aluminum, wrought iron, or cast iron culvert carrying County RD 913 over Unnamed CR in Audrain County, Missouri. It was built in 2019, so it is 6 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 13 by 2043. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCounty RD 913
CrossesUnnamed CR
LocationS 3 T 50 N R 9 W
RouteCounty Highway 913
CountyAudrain County
StateMissouri
Coordinates39.13869, -91.91136
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert9 ExcellentNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span23 ft (7 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic13 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 913 over Unnamed CR built?

It was built in 2019, making it 6 years old in 2025.

What condition is County RD 913 over Unnamed CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does County RD 913 over Unnamed CR carry?

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

How long is County RD 913 over Unnamed CR?

The structure is 30 ft (9.1 m) long with a longest span of 23 ft (7 m) and a deck 30 ft wide.

Who owns County RD 913 over Unnamed CR?

It is owned by the County Highway Agency.