US Bridges

Duck RD over Little Osage Rvr

Good

Vernon County, Missouri · S 18 T 37 N R 31 W · Structure no. 34774

Built
2015
10 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
122 ft
3 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

Duck RD over Little Osage Rvr is a prestressed concrete stringer/multi-beam or girder carrying Duck RD over Little Osage Rvr in Vernon County, Missouri. It was built in 2015, so it is 10 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 52 by 2043. The structure is 122 ft (37.1 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesDuck RD
CrossesLittle Osage Rvr
LocationS 18 T 37 N R 31 W
RouteCounty Highway 47
CountyVernon County
StateMissouri
Coordinates37.98496, -94.38755
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating62.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.1 m)
Longest span43 ft (13.1 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic52 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Duck RD over Little Osage Rvr built?

It was built in 2015, making it 10 years old in 2025.

What condition is Duck RD over Little Osage Rvr 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 December 2023.

How much traffic does Duck RD over Little Osage Rvr carry?

About 40 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Duck RD over Little Osage Rvr?

The structure is 122 ft (37.1 m) long with a longest span of 43 ft (13.1 m) and a deck 23 ft wide.

Who owns Duck RD over Little Osage Rvr?

It is owned by the County Highway Agency.