US Bridges

Pk Watkins Mil RD over Trib Watkins Mill

FairPosted for load

Clay County, Missouri · S 10 T 53 N R 30 W · Structure no. 36591

Built
1920
105 years old
Condition
Fair
inspected December 2023
Type
Truss - Thru
Steel
Length
40 ft
1 main span
Daily traffic
20
2024 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Pk Watkins Mil RD over Trib Watkins Mill is a steel truss - thru carrying Pk Watkins Mil RD over Trib Watkins Mill in Clay 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 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. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 15% of them trucks, projected to reach 31 by 2044. The structure is 40 ft (12.2 m) long and 14 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesPk Watkins Mil RD
CrossesTrib Watkins Mill
LocationS 10 T 53 N R 30 W
RouteState Lands Road 0
Coordinates39.41134, -94.25331
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating16.9 US tons
Inventory rating9.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic31 by 2044
Trucks15%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$344,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pk Watkins Mil RD over Trib Watkins Mill built?

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

What condition is Pk Watkins Mil RD over Trib Watkins Mill 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 Pk Watkins Mil RD over Trib Watkins Mill carry?

About 20 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Pk Watkins Mil RD over Trib Watkins Mill?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 14 ft wide.

Who owns Pk Watkins Mil RD over Trib Watkins Mill?

It is owned by the State Park, Forest, or Reservation Agency.