US Bridges

Upper Bottom RD over Duckett CR

Fair

St. Charles County, Missouri · S 27 T 46 N R 4 E · Structure no. 30125

Built
2002
23 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
49 ft
4 main spans
Daily traffic
8,748
2024 count
Owner
County
County Highway Agency

About this bridge

Upper Bottom RD over Duckett CR is a concrete continuous culvert carrying Upper Bottom RD over 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 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 8,748 vehicles a day, roughly 2% of them trucks, projected to reach 13,559 by 2044. The structure is 49 ft (14.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUpper Bottom RD
CrossesDuckett CR
LocationS 27 T 46 N R 4 E
RouteCounty Highway 209
Coordinates38.73733, -90.53694
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior 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
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,748 (2024)
Projected traffic13,559 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Duckett CR built?

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

What condition is Upper Bottom RD over 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 Duckett CR carry?

About 8,748 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Upper Bottom RD over Duckett CR?

The structure is 49 ft (14.9 m) long with a longest span of 7 ft (2.1 m).

Who owns Upper Bottom RD over Duckett CR?

It is owned by the County Highway Agency.