US Bridges

Rt Dd S over Dumas CR

Fair

Clark County, Missouri · S 21 T 66 N R 7 W · Structure no. 6843

Built
1956
69 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
63
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Dd S over Dumas CR is a concrete continuous culvert carrying Rt Dd S over Dumas CR in Clark County, Missouri. It was built in 1956, so it is 69 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 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 63 vehicles a day, roughly 9% of them trucks, projected to reach 91 by 2044. The structure is 30 ft (9.2 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRt Dd S
CrossesDumas CR
LocationS 21 T 66 N R 7 W
RouteState Highway 0DD
CountyClark County
StateMissouri
Coordinates40.50638, -91.66921
Functional classRural Minor Collector

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length30 ft (9.2 m)
Longest span12 ft (3.7 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63 (2024)
Projected traffic91 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Rt Dd S over Dumas CR built?

It was built in 1956, making it 69 years old in 2025.

What condition is Rt Dd S over Dumas 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 November 2023.

How much traffic does Rt Dd S over Dumas CR carry?

About 63 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Rt Dd S over Dumas CR?

The structure is 30 ft (9.2 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.

Who owns Rt Dd S over Dumas CR?

It is owned by the State Highway Agency.