US Bridges

Mo 149 S over Str

Fair

Macon County, Missouri · S 31 T 58 N R 16 W · Structure no. 8659

Built
1932
93 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
281
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 149 S over Str is a concrete continuous culvert carrying Mo 149 S over Str in Macon County, Missouri. It was built in 1932, so it is 93 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 281 vehicles a day, roughly 19% of them trucks, projected to reach 351 by 2044. The structure is 23 ft (7 m) long and 22 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesMo 149 S
CrossesStr
LocationS 31 T 58 N R 16 W
RouteState Highway 149
CountyMacon County
StateMissouri
Coordinates39.78935, -92.73844
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.7 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic281 (2024)
Projected traffic351 by 2044
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 149 S over Str built?

It was built in 1932, making it 93 years old in 2025.

What condition is Mo 149 S over 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 September 2023.

How much traffic does Mo 149 S over Str carry?

About 281 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is Mo 149 S over Str?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns Mo 149 S over Str?

It is owned by the State Highway Agency.