US Bridges

Rp Lambert Intl Bl over Is 70

Fair

St. Louis County, Missouri · S 656 T 46 N R 6 E · Structure no. 3500

Built
1984
41 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
531 ft
4 main spans
Daily traffic
5,378
2024 count
Owner
State
State Highway Agency

About this bridge

Rp Lambert Intl Bl over Is 70 is a steel continuous stringer/multi-beam or girder carrying Rp Lambert Intl Bl over Is 70 in St. Louis County, Missouri. It was built in 1984, so it is 41 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 5,378 vehicles a day, roughly 4% of them trucks, projected to reach 6,723 by 2044. The structure is 531 ft (161.8 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRp Lambert Intl Bl
CrossesIs 70
LocationS 656 T 46 N R 6 E
RouteState Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.73304, -90.34806
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating42.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length531 ft (161.8 m)
Longest span158 ft (48.2 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,378 (2024)
Projected traffic6,723 by 2044
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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 Rp Lambert Intl Bl over Is 70 built?

It was built in 1984, making it 41 years old in 2025.

What condition is Rp Lambert Intl Bl over Is 70 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 2024.

How much traffic does Rp Lambert Intl Bl over Is 70 carry?

About 5,378 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Rp Lambert Intl Bl over Is 70?

The structure is 531 ft (161.8 m) long with a longest span of 158 ft (48.2 m) and a deck 41 ft wide.

Who owns Rp Lambert Intl Bl over Is 70?

It is owned by the State Highway Agency.