US Bridges

NW 336th ST over Mcguire Br

Fair

Clinton County, Missouri · S 6 T 56 N R 32 W · Structure no. 12716

Built
1997
28 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
25
2023 count
Owner
County
County Highway Agency

About this bridge

NW 336th ST over Mcguire Br is a concrete culvert carrying NW 336th ST over Mcguire Br in Clinton County, Missouri. It was built in 1997, so it is 28 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 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 29 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNW 336th ST
CrossesMcguire Br
LocationS 6 T 56 N R 32 W
RouteCounty Highway 18
CountyClinton County
StateMissouri
Coordinates39.70346, -94.53063
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 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
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 NW 336th ST over Mcguire Br built?

It was built in 1997, making it 28 years old in 2025.

What condition is NW 336th ST over Mcguire Br 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 Mcguire Br carry?

About 25 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NW 336th ST over Mcguire Br?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns NW 336th ST over Mcguire Br?

It is owned by the County Highway Agency.