US Bridges

390th RD over Shethigh CR

Good

Putnam County, Missouri · S 16 T 64 N R 17 W · Structure no. 20658

Built
1994
31 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

390th RD over Shethigh CR is a prestressed concrete stringer/multi-beam or girder carrying 390th RD over Shethigh CR in Putnam County, Missouri. It was built in 1994, so it is 31 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 28 by 2044. The structure is 80 ft (24.4 m) long and 23 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Carries390th RD
CrossesShethigh CR
LocationS 16 T 64 N R 17 W
RouteCounty Highway 269
Coordinates40.34305, -92.81865
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating59.5 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length80 ft (24.4 m)
Longest span76 ft (23.2 m)
Deck width23 ft (6.9 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic28 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 390th RD over Shethigh CR built?

It was built in 1994, making it 31 years old in 2025.

What condition is 390th RD over Shethigh 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 February 2023.

How much traffic does 390th RD over Shethigh CR carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 390th RD over Shethigh CR?

The structure is 80 ft (24.4 m) long with a longest span of 76 ft (23.2 m) and a deck 23 ft wide.

Who owns 390th RD over Shethigh CR?

It is owned by the County Highway Agency.