US Bridges

US 65 N over Flat CR

Fair

Pettis County, Missouri · S 20 T 45 N R 21 W · Structure no. 2309

Built
1974
51 years old, rebuilt 2020
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
370 ft
3 main spans
Daily traffic
7,230
2024 count
Owner
State
State Highway Agency

About this bridge

US 65 N over Flat CR is a steel stringer/multi-beam or girder carrying US 65 N over Flat CR in Pettis County, Missouri. It was built in 1974 and reconstructed in 2020, so it is 51 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 7,230 vehicles a day, roughly 14% of them trucks, projected to reach 12,653 by 2044. The structure is 370 ft (112.8 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 65 N
CrossesFlat CR
LocationS 20 T 45 N R 21 W
RouteU.S. Route 65
Coordinates38.65958, -93.25342
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.6 US tons
Inventory rating30.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+3 approach)
Design loadHS 20
Structure length370 ft (112.8 m)
Longest span100 ft (30.5 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,230 (2024)
Projected traffic12,653 by 2044
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 65 N over Flat CR built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2020.

What condition is US 65 N over Flat 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 January 2024.

How much traffic does US 65 N over Flat CR carry?

About 7,230 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is US 65 N over Flat CR?

The structure is 370 ft (112.8 m) long with a longest span of 100 ft (30.5 m) and a deck 41 ft wide.

Who owns US 65 N over Flat CR?

It is owned by the State Highway Agency.