US Bridges

Blaue RD over Coon CR

Fair

Montgomery County, Missouri · S 8 T 50 N R 6 W · Structure no. 12326

Built
1981
44 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Blaue RD over Coon CR is a concrete culvert carrying Blaue RD over Coon CR in Montgomery County, Missouri. It was built in 1981, so it is 44 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 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 63 by 2043. The structure is 32 ft (9.8 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesBlaue RD
CrossesCoon CR
LocationS 8 T 50 N R 6 W
RouteCounty Highway 6
CountyMontgomery County
StateMissouri
Coordinates39.11989, -91.59403
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
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 rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length32 ft (9.8 m)
Longest span14 ft (4.3 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic63 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Blaue RD over Coon CR built?

It was built in 1981, making it 44 years old in 2025.

What condition is Blaue RD over Coon 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 February 2025.

How much traffic does Blaue RD over Coon CR carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Blaue RD over Coon CR?

The structure is 32 ft (9.8 m) long with a longest span of 14 ft (4.3 m) and a deck 23 ft wide.

Who owns Blaue RD over Coon CR?

It is owned by the County Highway Agency.