US Bridges

Rt H E over Black Oak CR

Fair

Phelps County, Missouri · S 4 T 34 N R 8 W · Structure no. 6763

Built
1956
69 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
408
2024 count
Owner
State
State Highway Agency

About this bridge

Rt H E over Black Oak CR is a concrete continuous culvert carrying Rt H E over Black Oak CR in Phelps 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 408 vehicles a day, roughly 5% of them trucks, projected to reach 612 by 2044. The structure is 26 ft (7.8 m) long and 25 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesRt H E
CrossesBlack Oak CR
LocationS 4 T 34 N R 8 W
RouteState Highway 0H
Coordinates37.6871, -91.81436
Functional classRural Major 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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating61.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length26 ft (7.8 m)
Longest span12 ft (3.7 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic408 (2024)
Projected traffic612 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 H E over Black Oak CR built?

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

What condition is Rt H E over Black Oak 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 May 2023.

How much traffic does Rt H E over Black Oak CR carry?

About 408 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Rt H E over Black Oak CR?

The structure is 26 ft (7.8 m) long with a longest span of 12 ft (3.7 m) and a deck 25 ft wide.

Who owns Rt H E over Black Oak CR?

It is owned by the State Highway Agency.