US Bridges

Audrain LN over Spencer CR

Good

Ralls County, Missouri · S 32 T 53 N R 5 W · Structure no. 37515

Built
2023
2 years old
Condition
Good
inspected June 2024
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
25 ft
2 main spans
Daily traffic
50
2025 count
Owner
County
County Highway Agency

About this bridge

Audrain LN over Spencer CR is a aluminum, wrought iron, or cast iron culvert carrying Audrain LN over Spencer CR in Ralls County, Missouri. It was built in 2023, so it is 2 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 63 by 2045. The structure is 25 ft (7.6 m) long and 18 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAudrain LN
CrossesSpencer CR
LocationS 32 T 53 N R 5 W
RouteCounty Highway 246
Coordinates39.32092, -91.49445
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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
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 spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span11 ft (3.5 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2025)
Projected traffic63 by 2045
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 Audrain LN over Spencer CR built?

It was built in 2023, making it 2 years old in 2025.

What condition is Audrain LN over Spencer 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 June 2024.

How much traffic does Audrain LN over Spencer CR carry?

About 50 vehicles per day (2025 count), of which roughly 10% are trucks.

How long is Audrain LN over Spencer CR?

The structure is 25 ft (7.6 m) long with a longest span of 11 ft (3.5 m) and a deck 18 ft wide.

Who owns Audrain LN over Spencer CR?

It is owned by the County Highway Agency.