US Bridges

Is 270 E over Mo 367

FairPosted for load

St. Louis County, Missouri · S 33 T 47 N R 7 E · Structure no. 5554

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
200 ft
4 main spans
Daily traffic
87,966
2024 count
Owner
State
State Highway Agency

About this bridge

Is 270 E over Mo 367 is a steel continuous stringer/multi-beam or girder carrying Is 270 E over Mo 367 in St. Louis County, Missouri. It was built in 1961, 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 5 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 87,966 vehicles a day, roughly 18% of them trucks, projected to reach 109,958 by 2044. The structure is 200 ft (61 m) long and 113 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 270 E
CrossesMo 367
LocationS 33 T 47 N R 7 E
RouteInterstate 270
CountySt. Louis County
StateMissouri
Coordinates38.77069, -90.23883
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length200 ft (61 m)
Longest span52 ft (15.8 m)
Deck width113 ft (34.4 m)
Roadway width107 ft (32.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic87,966 (2024)
Projected traffic109,958 by 2044
Trucks18%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 270 E over Mo 367 built?

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

What condition is Is 270 E over Mo 367 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 E over Mo 367 carry?

About 87,966 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 270 E over Mo 367?

The structure is 200 ft (61 m) long with a longest span of 52 ft (15.8 m) and a deck 113 ft wide.

Who owns Is 270 E over Mo 367?

It is owned by the State Highway Agency.