US Bridges

Mo 21 S over Brair CR

FairPosted for load

Ripley County, Missouri · S 33 T 23 N R 2 E · Structure no. 5465

Built
1930
95 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
145 ft
3 main spans
Daily traffic
2,108
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 21 S over Brair CR is a steel stringer/multi-beam or girder carrying Mo 21 S over Brair CR in Ripley County, Missouri. It was built in 1930, 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. Its operating status is: posted for load restriction.

It carries about 2,108 vehicles a day, roughly 18% of them trucks, projected to reach 3,162 by 2044. The structure is 145 ft (44.2 m) long and 26 ft wide. If it were closed, the detour would be 37.9 mi (61 km).

Location

Open in Google Maps
CarriesMo 21 S
CrossesBrair CR
LocationS 33 T 23 N R 2 E
RouteState Highway 21
CountyRipley County
StateMissouri
Coordinates36.60725, -90.8574
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.8 US tons
Inventory rating13.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length145 ft (44.2 m)
Longest span49 ft (14.8 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,108 (2024)
Projected traffic3,162 by 2044
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.9 mi (61 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 21 S over Brair CR built?

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

What condition is Mo 21 S over Brair CR 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 January 2024.

How much traffic does Mo 21 S over Brair CR carry?

About 2,108 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Mo 21 S over Brair CR?

The structure is 145 ft (44.2 m) long with a longest span of 49 ft (14.8 m) and a deck 26 ft wide.

Who owns Mo 21 S over Brair CR?

It is owned by the State Highway Agency.