US Bridges

Mosby RD over Williams CR

FairPosted for load

Clay County, Missouri · S 16 T 52 N R 30 W · Structure no. 22395

Built
1919
106 years old
Condition
Fair
inspected December 2023
Type
Arch - Deck
Concrete
Length
119 ft
2 main spans
Daily traffic
200
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mosby RD over Williams CR is a concrete arch - deck carrying Mosby RD over Williams CR in Clay County, Missouri. It was built in 1919, so it is 106 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 200 vehicles a day, roughly 10% of them trucks, projected to reach 320 by 2044. The structure is 119 ft (36.3 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMosby RD
CrossesWilliams CR
LocationS 16 T 52 N R 30 W
RouteCity Street 354
CountyClay County
StateMissouri
Coordinates39.31711, -94.28272
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.5 US tons
Inventory rating38.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length119 ft (36.3 m)
Longest span47 ft (14.3 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2024)
Projected traffic320 by 2044
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$558,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mosby RD over Williams CR built?

It was built in 1919, making it 106 years old in 2025.

What condition is Mosby RD over Williams 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 Mosby RD over Williams CR carry?

About 200 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mosby RD over Williams CR?

The structure is 119 ft (36.3 m) long with a longest span of 47 ft (14.3 m) and a deck 20 ft wide.

Who owns Mosby RD over Williams CR?

It is owned by the City or Municipal Highway Agency.