US Bridges

Cannon Mines RD over Old Mines CR

Fair

Washington County, Missouri · S 3039 T 38 N R 2 E · Structure no. 34279

Built
2012
13 years old
Condition
Fair
inspected April 2024
Type
Channel Beam
Concrete
Length
40 ft
1 main span
Daily traffic
175
2024 count
Owner
County
County Highway Agency

About this bridge

Cannon Mines RD over Old Mines CR is a concrete channel beam carrying Cannon Mines RD over Old Mines CR in Washington County, Missouri. It was built in 2012, so it is 13 years old, younger 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 6 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 175 vehicles a day, roughly 10% of them trucks, projected to reach 210 by 2044. The structure is 40 ft (12.2 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCannon Mines RD
CrossesOld Mines CR
LocationS 3039 T 38 N R 2 E
RouteCounty Highway 32
CountyWashington County
StateMissouri
Coordinates38.0331, -90.7559
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating43.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span37 ft (11.3 m)
Deck width26 ft (7.8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2024)
Projected traffic210 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Cannon Mines RD over Old Mines CR built?

It was built in 2012, making it 13 years old in 2025.

What condition is Cannon Mines RD over Old Mines 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 April 2024.

How much traffic does Cannon Mines RD over Old Mines CR carry?

About 175 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Cannon Mines RD over Old Mines CR?

The structure is 40 ft (12.2 m) long with a longest span of 37 ft (11.3 m) and a deck 26 ft wide.

Who owns Cannon Mines RD over Old Mines CR?

It is owned by the County Highway Agency.