US Bridges

Rp IS270E to IS70W over Is 270

Fair

St. Louis County, Missouri · S 131 T 46 N R 5 E · Structure no. 3132

Built
1982
43 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,648 ft
6 main spans
Daily traffic
21,810
2024 count
Owner
State
State Highway Agency

About this bridge

Rp IS270E to IS70W over Is 270 is a steel continuous stringer/multi-beam or girder carrying Rp IS270E to IS70W over Is 270 in St. Louis County, Missouri. It was built in 1982, so it is 43 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 21,810 vehicles a day, roughly 10% of them trucks, projected to reach 27,263 by 2044. The structure is 1,648 ft (502.3 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRp IS270E to IS70W
CrossesIs 270
LocationS 131 T 46 N R 5 E
RouteState Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.74859, -90.4378
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
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 alignment8: Equal to present desirable criteria
Operating rating60.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6 (+13 approach)
Design loadHS 20 + Mod
Structure length1,648 ft (502.3 m)
Longest span153 ft (46.6 m)
Deck width30 ft (9.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,810 (2024)
Projected traffic27,263 by 2044
Trucks10%
Lanes on structure1
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$10.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rp IS270E to IS70W over Is 270 built?

It was built in 1982, making it 43 years old in 2025.

What condition is Rp IS270E to IS70W over Is 270 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 April 2023.

How much traffic does Rp IS270E to IS70W over Is 270 carry?

About 21,810 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rp IS270E to IS70W over Is 270?

The structure is 1,648 ft (502.3 m) long with a longest span of 153 ft (46.6 m) and a deck 30 ft wide.

Who owns Rp IS270E to IS70W over Is 270?

It is owned by the State Highway Agency.