US Bridges

Fallon Pkwy over Trib of Dardenne C

Fair

St. Charles County, Missouri · S 9 T 46 N R 3 E · Structure no. 32951

Built
2002
23 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
52 ft
3 main spans
Daily traffic
1,000
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fallon Pkwy over Trib of Dardenne C is a concrete continuous culvert carrying Fallon Pkwy over Trib of Dardenne C 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,550 by 2044. The structure is 52 ft (15.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFallon Pkwy
CrossesTrib of Dardenne C
LocationS 9 T 46 N R 3 E
RouteCity Street 0
Coordinates38.76356, -90.69794
Functional classUrban 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 protection6 SatisfactoryStructural elements show some minor deterioration.
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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span18 ft (5.5 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2024)
Projected traffic1,550 by 2044
Trucks10%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Fallon Pkwy over Trib of Dardenne C built?

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

What condition is Fallon Pkwy over Trib of Dardenne C 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 Fallon Pkwy over Trib of Dardenne C carry?

About 1,000 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Fallon Pkwy over Trib of Dardenne C?

The structure is 52 ft (15.8 m) long with a longest span of 18 ft (5.5 m) and a deck 28 ft wide.

Who owns Fallon Pkwy over Trib of Dardenne C?

It is owned by the City or Municipal Highway Agency.