US Bridges

Mo 91 S over Diversion Chnl

Fair

Bollinger County, Missouri · S 26 T 29 N R 10 E · Structure no. 4593

Built
1970
55 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
596 ft
3 main spans
Daily traffic
2,078
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 91 S over Diversion Chnl is a steel continuous stringer/multi-beam or girder carrying Mo 91 S over Diversion Chnl in Bollinger County, Missouri. It was built in 1970, so it is 55 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 2,078 vehicles a day, roughly 8% of them trucks, projected to reach 3,221 by 2044. The structure is 596 ft (181.7 m) long and 41 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesMo 91 S
CrossesDiversion Chnl
LocationS 26 T 29 N R 10 E
RouteState Highway 91
CountyBollinger County
StateMissouri
Coordinates37.14665, -89.91781
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+8 approach)
Design loadHS 20
Structure length596 ft (181.7 m)
Longest span107 ft (32.6 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,078 (2024)
Projected traffic3,221 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 91 S over Diversion Chnl built?

It was built in 1970, making it 55 years old in 2025.

What condition is Mo 91 S over Diversion Chnl 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 March 2024.

How much traffic does Mo 91 S over Diversion Chnl carry?

About 2,078 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Mo 91 S over Diversion Chnl?

The structure is 596 ft (181.7 m) long with a longest span of 107 ft (32.6 m) and a deck 41 ft wide.

Who owns Mo 91 S over Diversion Chnl?

It is owned by the State Highway Agency.