US Bridges

Is 270 W over Crd Bellefontaine RD

Fair

St. Louis County, Missouri · S 34 T 47 N R 7 E · Structure no. 210

Built
1961
64 years old, rebuilt 2000
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
163 ft
3 main spans
Daily traffic
29,114
2024 count
Owner
State
State Highway Agency

About this bridge

Is 270 W over Crd Bellefontaine RD is a concrete continuous slab carrying Is 270 W over Crd Bellefontaine RD in St. Louis County, Missouri. It was built in 1961 and reconstructed in 2000, so it is 64 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.

It carries about 29,114 vehicles a day, roughly 18% of them trucks, projected to reach 36,393 by 2044. The structure is 163 ft (49.7 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIs 270 W
CrossesCrd Bellefontaine RD
LocationS 34 T 47 N R 7 E
RouteInterstate 270
CountySt. Louis County
StateMissouri
Coordinates38.76996, -90.22076
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating33.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length163 ft (49.7 m)
Longest span64 ft (19.5 m)
Deck width51 ft (15.4 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,114 (2024)
Projected traffic36,393 by 2044
Trucks18%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 270 W over Crd Bellefontaine RD built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2000.

What condition is Is 270 W over Crd Bellefontaine RD 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 August 2024.

How much traffic does Is 270 W over Crd Bellefontaine RD carry?

About 29,114 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 270 W over Crd Bellefontaine RD?

The structure is 163 ft (49.7 m) long with a longest span of 64 ft (19.5 m) and a deck 51 ft wide.

Who owns Is 270 W over Crd Bellefontaine RD?

It is owned by the State Highway Agency.