US Bridges

County RD 501 over Opossum CR

FairPosted for load

Bollinger County, Missouri · S 12 T 30 N R 9 E · Structure no. 24495

Built
1975
50 years old, rebuilt 2008
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
32 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 501 over Opossum CR is a wood or timber stringer/multi-beam or girder carrying County RD 501 over Opossum CR in Bollinger County, Missouri. It was built in 1975 and reconstructed in 2008, so it is 50 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. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 26 by 2044. The structure is 32 ft (9.8 m) long and 14 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesCounty RD 501
CrossesOpossum CR
LocationS 12 T 30 N R 9 E
RouteCounty Highway 501
CountyBollinger County
StateMissouri
Coordinates37.293, -90.00142
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating17.9 US tons
Inventory rating12.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width14 ft (4.2 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic26 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 501 over Opossum CR built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2008.

What condition is County RD 501 over Opossum 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 501 over Opossum CR carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 501 over Opossum CR?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 14 ft wide.

Who owns County RD 501 over Opossum CR?

It is owned by the County Highway Agency.