US Bridges

County RD 8410 over Br of Spring CR

Fair

Phelps County, Missouri · S 5 T 38 N R 8 W · Structure no. 20836

Built
1900
125 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
40
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 8410 over Br of Spring CR is a concrete culvert carrying County RD 8410 over Br of Spring CR in Phelps County, Missouri. It was built in 1900, so it is 125 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 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 52 by 2044. The structure is 29 ft (8.8 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCounty RD 8410
CrossesBr of Spring CR
LocationS 5 T 38 N R 8 W
RouteCounty Highway 277
CountyPhelps County
StateMissouri
Coordinates38.0429, -91.8266
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2024)
Projected traffic52 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 County RD 8410 over Br of Spring CR built?

It was built in 1900, making it 125 years old in 2025.

What condition is County RD 8410 over Br of Spring 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 County RD 8410 over Br of Spring CR carry?

About 40 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 8410 over Br of Spring CR?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 29 ft wide.

Who owns County RD 8410 over Br of Spring CR?

It is owned by the County Highway Agency.