US Bridges

Obryan Ave over Unnamed Str

Fair

Chariton County, Missouri · S 35 T 54 N R 18 W · Structure no. 23366

Built
1930
95 years old, rebuilt 1988
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

Obryan Ave over Unnamed Str is a steel stringer/multi-beam or girder carrying Obryan Ave over Unnamed Str in Chariton County, Missouri. It was built in 1930 and reconstructed in 1988, so it is 95 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 6 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 22 by 2044. The structure is 39 ft (11.9 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesObryan Ave
CrossesUnnamed Str
LocationS 35 T 54 N R 18 W
RouteCounty Highway 406
CountyChariton County
StateMissouri
Coordinates39.44657, -92.89865
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length39 ft (11.9 m)
Longest span38 ft (11.6 m)
Deck width23 ft (7.1 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic22 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-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 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 Obryan Ave over Unnamed Str built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1988.

What condition is Obryan Ave over Unnamed Str 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 October 2024.

How much traffic does Obryan Ave over Unnamed Str carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Obryan Ave over Unnamed Str?

The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.6 m) and a deck 23 ft wide.

Who owns Obryan Ave over Unnamed Str?

It is owned by the County Highway Agency.