US Bridges

County RD 200 over Br of Duncan CR

Fair

Vernon County, Missouri · S 29 T 38 N R 33 W · Structure no. 12230

Built
1950
75 years old, rebuilt 2021
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
71 ft
3 main spans
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 200 over Br of Duncan CR is a steel stringer/multi-beam or girder carrying County RD 200 over Br of Duncan CR in Vernon County, Missouri. It was built in 1950 and reconstructed in 2021, so it is 75 years old, older 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 26 by 2043. The structure is 71 ft (21.6 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty RD 200
CrossesBr of Duncan CR
LocationS 29 T 38 N R 33 W
RouteCounty Highway 3
CountyVernon County
StateMissouri
Coordinates38.04881, -94.59178
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
Deck9 ExcellentNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.6 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length71 ft (21.6 m)
Longest span37 ft (11.4 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic26 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 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 County RD 200 over Br of Duncan CR built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2021.

What condition is County RD 200 over Br of Duncan CR 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 200 over Br of Duncan CR carry?

About 20 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 200 over Br of Duncan CR?

The structure is 71 ft (21.6 m) long with a longest span of 37 ft (11.4 m) and a deck 20 ft wide.

Who owns County RD 200 over Br of Duncan CR?

It is owned by the County Highway Agency.