US Bridges

Wienberg Ave over S Flat CR

PoorPosted for load

Benton County, Missouri · S 23 T 43 N R 11 W · Structure no. 12967

Built
1920
105 years old
Condition
Poor
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
30
2023 count
Owner
Local
Other Local Agency

About this bridge

Wienberg Ave over S Flat CR is a steel stringer/multi-beam or girder carrying Wienberg Ave over S Flat CR in Benton County, Missouri. It was built in 1920, so it is 105 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2043. The structure is 26 ft (7.9 m) long and 16 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesWienberg Ave
CrossesS Flat CR
LocationS 23 T 43 N R 11 W
RouteCounty Highway 25
CountyBenton County
StateMissouri
Coordinates38.48066, -93.31146
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20.8 US tons
Inventory rating11.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic44 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$255,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wienberg Ave over S Flat CR built?

It was built in 1920, making it 105 years old in 2025.

What condition is Wienberg Ave over S 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 January 2024.

How much traffic does Wienberg Ave over S Flat CR carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Wienberg Ave over S Flat CR?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 16 ft wide.

Who owns Wienberg Ave over S Flat CR?

It is owned by the Other Local Agency.