US Bridges

Mo 33 S over Willow CR

Fair

DeKalb County, Missouri · S 10 T 58 N R 31 W · Structure no. 251

Built
1959
66 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
2,016
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 33 S over Willow CR is a concrete continuous culvert carrying Mo 33 S over Willow CR in DeKalb County, Missouri. It was built in 1959, so it is 66 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.

It carries about 2,016 vehicles a day, roughly 7% of them trucks, projected to reach 2,621 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesMo 33 S
CrossesWillow CR
LocationS 10 T 58 N R 31 W
RouteState Highway 33
CountyDeKalb County
StateMissouri
Coordinates39.85843, -94.36246
Functional classRural Major Collector

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; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating75.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length25 ft (7.6 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 traffic2,016 (2024)
Projected traffic2,621 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 33 S over Willow CR built?

It was built in 1959, making it 66 years old in 2025.

What condition is Mo 33 S over Willow 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 Mo 33 S over Willow CR carry?

About 2,016 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Mo 33 S over Willow CR?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Mo 33 S over Willow CR?

It is owned by the State Highway Agency.