US Bridges

Farm RD 1120 over Flat CR

Fair

Barry County, Missouri · S 21 T 23 N R 27 W · Structure no. 25033

Built
1941
84 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete
Length
120 ft
4 main spans
Daily traffic
150
2024 count
Owner
County
County Highway Agency

About this bridge

Farm RD 1120 over Flat CR is a concrete tee beam carrying Farm RD 1120 over Flat CR in Barry County, Missouri. It was built in 1941, so it is 84 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 150 vehicles a day, roughly 10% of them trucks, projected to reach 255 by 2044. The structure is 120 ft (36.6 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFarm RD 1120
CrossesFlat CR
LocationS 21 T 23 N R 27 W
RouteCounty Highway 603
CountyBarry County
StateMissouri
Coordinates36.69718, -93.85411
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating46.6 US tons
Inventory rating23.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic255 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Farm RD 1120 over Flat CR built?

It was built in 1941, making it 84 years old in 2025.

What condition is Farm RD 1120 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 February 2024.

How much traffic does Farm RD 1120 over Flat CR carry?

About 150 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Farm RD 1120 over Flat CR?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns Farm RD 1120 over Flat CR?

It is owned by the County Highway Agency.