US Bridges

NW 336th ST over Br of Castile CR

Fair

Clinton County, Missouri · S 35 T 57 N R 32 W · Structure no. 34472

Built
2011
14 years old
Condition
Fair
inspected December 2024
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
20 ft
2 main spans
Daily traffic
25
2023 count
Owner
County
County Highway Agency

About this bridge

NW 336th ST over Br of Castile CR is a aluminum, wrought iron, or cast iron culvert carrying NW 336th ST over Br of Castile CR in Clinton County, Missouri. It was built in 2011, so it is 14 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 6 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 25 vehicles a day, roughly 20% of them trucks, projected to reach 29 by 2043. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNW 336th ST
CrossesBr of Castile CR
LocationS 35 T 57 N R 32 W
RouteCounty Highway 35
CountyClinton County
StateMissouri
Coordinates39.70358, -94.46572
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans2
Design loadUnknown
Structure length20 ft (6.2 m)
Longest span8 ft (2.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic29 by 2043
Trucks20%
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

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 NW 336th ST over Br of Castile CR built?

It was built in 2011, making it 14 years old in 2025.

What condition is NW 336th ST over Br of Castile 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 2024.

How much traffic does NW 336th ST over Br of Castile CR carry?

About 25 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is NW 336th ST over Br of Castile CR?

The structure is 20 ft (6.2 m) long with a longest span of 8 ft (2.5 m).

Who owns NW 336th ST over Br of Castile CR?

It is owned by the County Highway Agency.