US Bridges

Elkstown RD over Br of Otter Rvr

Fair

Cooper County, Missouri · S 19 T 46 N R 18 W · Structure no. 20197

Built
1970
55 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

Elkstown RD over Br of Otter Rvr is a concrete culvert carrying Elkstown RD over Br of Otter Rvr in Cooper County, Missouri. It was built in 1970, so it is 55 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 21 ft (6.4 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesElkstown RD
CrossesBr of Otter Rvr
LocationS 19 T 46 N R 18 W
RouteCounty Highway 251
CountyCooper County
StateMissouri
Coordinates38.72967, -92.94811
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 adequacy7: Better than 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 length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Elkstown RD over Br of Otter Rvr built?

It was built in 1970, making it 55 years old in 2025.

What condition is Elkstown RD over Br of Otter Rvr 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 December 2023.

How much traffic does Elkstown RD over Br of Otter Rvr carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Elkstown RD over Br of Otter Rvr?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns Elkstown RD over Br of Otter Rvr?

It is owned by the County Highway Agency.