US Bridges

Rt B E over Dardenne CR

FairPosted for load

St. Charles County, Missouri · S 2 T 47 N R 4 E · Structure no. 635

Built
1962
63 years old, rebuilt 2011
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
247 ft
3 main spans
Daily traffic
812
2024 count
Owner
State
State Highway Agency

About this bridge

Rt B E over Dardenne CR is a steel continuous stringer/multi-beam or girder carrying Rt B E over Dardenne CR in St. Charles County, Missouri. It was built in 1962 and reconstructed in 2011, so it is 63 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 812 vehicles a day, roughly 11% of them trucks, projected to reach 1,583 by 2044. The structure is 247 ft (75.3 m) long and 29 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

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CarriesRt B E
CrossesDardenne CR
LocationS 2 T 47 N R 4 E
RouteState Highway 0B
CountySt. Charles County
StateMissouri
Coordinates38.85312, -90.54919
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: 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 rating34.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length247 ft (75.3 m)
Longest span94 ft (28.7 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic812 (2024)
Projected traffic1,583 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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 Rt B E over Dardenne CR built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2011.

What condition is Rt B E over Dardenne 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 September 2023.

How much traffic does Rt B E over Dardenne CR carry?

About 812 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt B E over Dardenne CR?

The structure is 247 ft (75.3 m) long with a longest span of 94 ft (28.7 m) and a deck 29 ft wide.

Who owns Rt B E over Dardenne CR?

It is owned by the State Highway Agency.