US Bridges

Sheldon Ave over Trib to Clark Br

PoorPosted for load

Chariton County, Missouri · S 33 T 56 N R 18 W · Structure no. 33472

Built
1920
105 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
5
2024 count
Owner
County
County Highway Agency

About this bridge

Sheldon Ave over Trib to Clark Br is a steel stringer/multi-beam or girder carrying Sheldon Ave over Trib to Clark Br in Chariton 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 5 vehicles a day, roughly 10% of them trucks, projected to reach 6 by 2044. The structure is 22 ft (6.7 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSheldon Ave
CrossesTrib to Clark Br
LocationS 33 T 56 N R 18 W
RouteCounty Highway 78
Coordinates39.61538, -92.92098
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating16.9 US tons
Inventory rating9.9 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2024)
Projected traffic6 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$239,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sheldon Ave over Trib to Clark Br built?

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

What condition is Sheldon Ave over Trib to Clark Br 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 September 2024.

How much traffic does Sheldon Ave over Trib to Clark Br carry?

About 5 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Sheldon Ave over Trib to Clark Br?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 16 ft wide.

Who owns Sheldon Ave over Trib to Clark Br?

It is owned by the County Highway Agency.