US Bridges

Mo 91 S over Drain Dtch No 1

Good

Scott County, Missouri · S 33 T 28 N R 12 E · Structure no. 33427

Built
2011
14 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
667
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 91 S over Drain Dtch No 1 is a prestressed concrete box beam or girders - multiple carrying Mo 91 S over Drain Dtch No 1 in Scott County, Missouri. It was built in 2011, so it is 14 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 667 vehicles a day, roughly 11% of them trucks, projected to reach 967 by 2044. The structure is 103 ft (31.4 m) long and 26 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesMo 91 S
CrossesDrain Dtch No 1
LocationS 33 T 28 N R 12 E
RouteState Highway 91
Coordinates37.03834, -89.73584
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span100 ft (30.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic667 (2024)
Projected traffic967 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 91 S over Drain Dtch No 1 built?

It was built in 2011, making it 14 years old in 2025.

What condition is Mo 91 S over Drain Dtch No 1 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Mo 91 S over Drain Dtch No 1 carry?

About 667 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Mo 91 S over Drain Dtch No 1?

The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 26 ft wide.

Who owns Mo 91 S over Drain Dtch No 1?

It is owned by the State Highway Agency.