US Bridges

Mo 39 S over Snag CR

Good

Cedar County, Missouri · S 31 T 34 N R 26 W · Structure no. 33298

Built
2010
15 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
1,609
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 39 S over Snag CR is a prestressed concrete box beam or girders - single or spread carrying Mo 39 S over Snag CR in Cedar County, Missouri. It was built in 2010, so it is 15 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,609 vehicles a day, roughly 7% of them trucks, projected to reach 2,414 by 2044. The structure is 87 ft (26.4 m) long and 30 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesMo 39 S
CrossesSnag CR
LocationS 31 T 34 N R 26 W
RouteState Highway 39
Coordinates37.64612, -93.83371
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating104.2 US tons
Inventory rating50.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length87 ft (26.4 m)
Longest span85 ft (25.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,609 (2024)
Projected traffic2,414 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 39 S over Snag CR built?

It was built in 2010, making it 15 years old in 2025.

What condition is Mo 39 S over Snag CR 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 June 2023.

How much traffic does Mo 39 S over Snag CR carry?

About 1,609 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Mo 39 S over Snag CR?

The structure is 87 ft (26.4 m) long with a longest span of 85 ft (25.9 m) and a deck 30 ft wide.

Who owns Mo 39 S over Snag CR?

It is owned by the State Highway Agency.