US Bridges

County RD 408 over Crooked CR

Good

Bollinger County, Missouri · S 13 T 30 N R 10 E · Structure no. 30856

Built
2005
20 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
182 ft
3 main spans
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 408 over Crooked CR is a concrete continuous box beam or girders - single or spread carrying County RD 408 over 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 130 by 2044. The structure is 182 ft (55.5 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCounty RD 408
CrossesCrooked CR
LocationS 13 T 30 N R 10 E
RouteCounty Highway 408
CountyBollinger County
StateMissouri
Coordinates37.27169, -89.8926
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.5 US tons
Inventory rating43.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length182 ft (55.5 m)
Longest span60 ft (18.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic130 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 408 over Crooked CR built?

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

What condition is County RD 408 over Crooked CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does County RD 408 over Crooked CR carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 408 over Crooked CR?

The structure is 182 ft (55.5 m) long with a longest span of 60 ft (18.3 m) and a deck 24 ft wide.

Who owns County RD 408 over Crooked CR?

It is owned by the County Highway Agency.