US Bridges

County RD 600 over Trib of Lit Osage

Fair

Vernon County, Missouri · S 25 T 37 N R 33 W · Structure no. 36234

Built
2018
7 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
5
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 600 over Trib of Lit Osage is a steel stringer/multi-beam or girder carrying County RD 600 over Trib of Lit Osage in Vernon County, Missouri. It was built in 2018, so it is 7 years old, younger 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 5 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 5 vehicles a day, roughly 10% of them trucks, projected to reach 7 by 2043. The structure is 36 ft (10.9 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty RD 600
CrossesTrib of Lit Osage
LocationS 25 T 37 N R 33 W
RouteCounty Highway 17
CountyVernon County
StateMissouri
Coordinates37.96495, -94.52218
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure9 ExcellentNo 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.5 US tons
Inventory rating34.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span33 ft (10 m)
Deck width23 ft (6.9 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2023)
Projected traffic7 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 County RD 600 over Trib of Lit Osage built?

It was built in 2018, making it 7 years old in 2025.

What condition is County RD 600 over Trib of Lit Osage 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 December 2023.

How much traffic does County RD 600 over Trib of Lit Osage carry?

About 5 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 600 over Trib of Lit Osage?

The structure is 36 ft (10.9 m) long with a longest span of 33 ft (10 m) and a deck 23 ft wide.

Who owns County RD 600 over Trib of Lit Osage?

It is owned by the County Highway Agency.