US Bridges

County RD 408 over Br of Crooked CR

FairPosted for load

Bollinger County, Missouri · S 14 T 30 N R 10 E · Structure no. 31656

Built
2005
20 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
2 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 408 over Br of Crooked CR is a steel stringer/multi-beam or girder carrying County RD 408 over Br of Crooked CR in Bollinger County, Missouri. It was built in 2005, so it is 20 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 46 by 2044. The structure is 61 ft (18.7 m) long and 18 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesCounty RD 408
CrossesBr of Crooked CR
LocationS 14 T 30 N R 10 E
RouteCounty Highway 408
CountyBollinger County
StateMissouri
Coordinates37.26748, -89.90588
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating19.8 US tons
Inventory rating11.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length61 ft (18.7 m)
Longest span24 ft (7.3 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic46 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$472,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 408 over Br of Crooked CR built?

It was built in 2005, making it 20 years old in 2025.

What condition is County RD 408 over Br of Crooked 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 408 over Br of Crooked CR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 408 over Br of Crooked CR?

The structure is 61 ft (18.7 m) long with a longest span of 24 ft (7.3 m) and a deck 18 ft wide.

Who owns County RD 408 over Br of Crooked CR?

It is owned by the County Highway Agency.