US Bridges

County RD Trapper over Drywood CR

PoorPosted for load

Vernon County, Missouri · S 3 T 34 N R 33 W · Structure no. 25154

Built
1920
105 years old
Condition
Poor
inspected February 2024
Type
Truss - Thru
Steel
Length
170 ft
1 main span
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

County RD Trapper over Drywood CR is a steel truss - thru carrying County RD Trapper over Drywood CR in Vernon County, Missouri. It was built in 1920, so it is 105 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 170 ft (51.8 m) long and 14 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesCounty RD Trapper
CrossesDrywood CR
LocationS 3 T 34 N R 33 W
RouteCounty Highway 644
Coordinates37.75403, -94.53406
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating31.7 US tons
Inventory rating14.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadOther
Structure length170 ft (51.8 m)
Longest span81 ft (24.7 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD Trapper over Drywood CR built?

It was built in 1920, making it 105 years old in 2025.

What condition is County RD Trapper over Drywood CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does County RD Trapper over Drywood CR carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD Trapper over Drywood CR?

The structure is 170 ft (51.8 m) long with a longest span of 81 ft (24.7 m) and a deck 14 ft wide.

Who owns County RD Trapper over Drywood CR?

It is owned by the County Highway Agency.