US Bridges

Upper Bottom RD over Trib of Duckett CR

Fair

St. Charles County, Missouri · S 23 T 46 N R 4 E · Structure no. 30124

Built
2002
23 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
44 ft
3 main spans
Daily traffic
6,178
2024 count
Owner
County
County Highway Agency

About this bridge

Upper Bottom RD over Trib of Duckett CR is a concrete continuous culvert carrying Upper Bottom RD over Trib of Duckett CR in St. Charles County, Missouri. It was built in 2002, so it is 23 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 6,178 vehicles a day, roughly 2% of them trucks, projected to reach 9,576 by 2044. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUpper Bottom RD
CrossesTrib of Duckett CR
LocationS 23 T 46 N R 4 E
RouteCounty Highway 0
CountySt. Charles County
StateMissouri
Coordinates38.73245, -90.55227
Functional classUrban Minor Arterial

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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.2 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,178 (2024)
Projected traffic9,576 by 2044
Trucks2%
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 Upper Bottom RD over Trib of Duckett CR built?

It was built in 2002, making it 23 years old in 2025.

What condition is Upper Bottom RD over Trib of Duckett 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 February 2024.

How much traffic does Upper Bottom RD over Trib of Duckett CR carry?

About 6,178 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Upper Bottom RD over Trib of Duckett CR?

The structure is 44 ft (13.4 m) long with a longest span of 13 ft (4 m).

Who owns Upper Bottom RD over Trib of Duckett CR?

It is owned by the County Highway Agency.