US Bridges

Mo 129 S over Chariton Rvr

Fair

Chariton County, Missouri · S 26 T 55 N R 17 W · Structure no. 6216

Built
1949
76 years old, rebuilt 2021
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
264 ft
4 main spans
Daily traffic
613
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 129 S over Chariton Rvr is a steel continuous stringer/multi-beam or girder carrying Mo 129 S over Chariton Rvr in Chariton County, Missouri. It was built in 1949 and reconstructed in 2021, so it is 76 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 613 vehicles a day, roughly 13% of them trucks, projected to reach 766 by 2044. The structure is 264 ft (80.5 m) long and 25 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

Location

Open in Google Maps
CarriesMo 129 S
CrossesChariton Rvr
LocationS 26 T 55 N R 17 W
RouteState Highway 129
CountyChariton County
StateMissouri
Coordinates39.53998, -92.79052
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length264 ft (80.5 m)
Longest span70 ft (21.3 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic613 (2024)
Projected traffic766 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.9 mi (53 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 129 S over Chariton Rvr built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2021.

What condition is Mo 129 S over Chariton Rvr 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 May 2023.

How much traffic does Mo 129 S over Chariton Rvr carry?

About 613 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mo 129 S over Chariton Rvr?

The structure is 264 ft (80.5 m) long with a longest span of 70 ft (21.3 m) and a deck 25 ft wide.

Who owns Mo 129 S over Chariton Rvr?

It is owned by the State Highway Agency.