US Bridges

Rp IS64W to IS270W over Is 270 Rp IS64E to IS27

Fair

St. Louis County, Missouri · S 15 T 45 N R 5 E · Structure no. 3809

Built
1988
37 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,418 ft
11 main spans
Daily traffic
15,521
2024 count
Owner
State
State Highway Agency

About this bridge

Rp IS64W to IS270W over Is 270 Rp IS64E to IS27 is a steel continuous stringer/multi-beam or girder carrying Rp IS64W to IS270W over Is 270 Rp IS64E to IS27 in St. Louis County, Missouri. It was built in 1988, so it is 37 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 15,521 vehicles a day, roughly 8% of them trucks, projected to reach 19,401 by 2044. The structure is 1,418 ft (432.1 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRp IS64W to IS270W
CrossesIs 270 Rp IS64E to IS27
LocationS 15 T 45 N R 5 E
RouteState Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.6388, -90.45118
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 rating81.4 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11 (+4 approach)
Design loadHS 20 + Mod
Structure length1,418 ft (432.1 m)
Longest span145 ft (44.2 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,521 (2024)
Projected traffic19,401 by 2044
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 IS64W to IS270W over Is 270 Rp IS64E to IS27 built?

It was built in 1988, making it 37 years old in 2025.

What condition is Rp IS64W to IS270W over Is 270 Rp IS64E to IS27 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 March 2023.

How much traffic does Rp IS64W to IS270W over Is 270 Rp IS64E to IS27 carry?

About 15,521 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Rp IS64W to IS270W over Is 270 Rp IS64E to IS27?

The structure is 1,418 ft (432.1 m) long with a longest span of 145 ft (44.2 m) and a deck 30 ft wide.

Who owns Rp IS64W to IS270W over Is 270 Rp IS64E to IS27?

It is owned by the State Highway Agency.