US Bridges

Farm RD 1142 over Flat CR

PoorPosted for load

Barry County, Missouri · S 23 T 24 N R 27 W · Structure no. 22125

Built
1915
110 years old
Condition
Poor
inspected February 2025
Type
Truss - Thru
Steel
Length
144 ft
1 main span
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

Farm RD 1142 over Flat CR is a steel truss - thru carrying Farm RD 1142 over Flat CR in Barry County, Missouri. It was built in 1915, so it is 110 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 85 by 2044. The structure is 144 ft (43.9 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFarm RD 1142
CrossesFlat CR
LocationS 23 T 24 N R 27 W
RouteCounty Highway 341
Coordinates36.77473, -93.81225
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating11.9 US tons
Inventory rating6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadOther
Structure length144 ft (43.9 m)
Longest span142 ft (43.3 m)
Deck width16 ft (4.8 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deck14 ft (4.4 m)

Traffic and service

Average daily traffic50 (2024)
Projected traffic85 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$982,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Farm RD 1142 over Flat CR built?

It was built in 1915, making it 110 years old in 2025.

What condition is Farm RD 1142 over Flat CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Farm RD 1142 over Flat CR carry?

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

How long is Farm RD 1142 over Flat CR?

The structure is 144 ft (43.9 m) long with a longest span of 142 ft (43.3 m) and a deck 16 ft wide.

Who owns Farm RD 1142 over Flat CR?

It is owned by the County Highway Agency.