US Bridges

Mo 15 S over Hamilton CR

Fair

Audrain County, Missouri · S 2 T 50 N R 9 W · Structure no. 5258

Built
1929
96 years old, rebuilt 2000
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
11,448
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 15 S over Hamilton CR is a concrete continuous culvert carrying Mo 15 S over Hamilton CR in Audrain County, Missouri. It was built in 1929 and reconstructed in 2000, so it is 96 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 11,448 vehicles a day, roughly 13% of them trucks, projected to reach 17,744 by 2044. The structure is 29 ft (8.8 m) long and 53 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesMo 15 S
CrossesHamilton CR
LocationS 2 T 50 N R 9 W
RouteState Highway 15
CountyAudrain County
StateMissouri
Coordinates39.14539, -91.88999
Functional classUrban Minor Arterial

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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.2 US tons
Inventory rating59.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length29 ft (8.8 m)
Longest span12 ft (3.7 m)
Deck width53 ft (16.1 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,448 (2024)
Projected traffic17,744 by 2044
Trucks13%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 15 S over Hamilton CR built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 2000.

What condition is Mo 15 S over Hamilton CR 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 October 2023.

How much traffic does Mo 15 S over Hamilton CR carry?

About 11,448 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mo 15 S over Hamilton CR?

The structure is 29 ft (8.8 m) long with a longest span of 12 ft (3.7 m) and a deck 53 ft wide.

Who owns Mo 15 S over Hamilton CR?

It is owned by the State Highway Agency.