US Bridges

County RD N-345 over Bryant CR

Fair

Douglas County, Missouri · S 29 T 25 N R 13 W · Structure no. 20451

Built
2000
25 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
169 ft
4 main spans
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

County RD N-345 over Bryant CR is a concrete continuous slab carrying County RD N-345 over Bryant CR in Douglas County, Missouri. It was built in 2000, so it is 25 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 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 73 by 2044. The structure is 169 ft (51.5 m) long and 26 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesCounty RD N-345
CrossesBryant CR
LocationS 29 T 25 N R 13 W
RouteCounty Highway 260
CountyDouglas County
StateMissouri
Coordinates36.82635, -92.39
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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length169 ft (51.5 m)
Longest span47 ft (14.3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic73 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 N-345 over Bryant CR built?

It was built in 2000, making it 25 years old in 2025.

What condition is County RD N-345 over Bryant 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 February 2024.

How much traffic does County RD N-345 over Bryant CR carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD N-345 over Bryant CR?

The structure is 169 ft (51.5 m) long with a longest span of 47 ft (14.3 m) and a deck 26 ft wide.

Who owns County RD N-345 over Bryant CR?

It is owned by the County Highway Agency.