US Bridges

Rp IS64E to 6th ST over 8th Street

FairPosted for load

St. Louis city, Missouri · S 13 T 45 N R 7 E · Structure no. 1258

Built
1967
58 years old
Condition
Fair
inspected April 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
477 ft
6 main spans
Daily traffic
5,243
2024 count
Owner
State
State Highway Agency

About this bridge

Rp IS64E to 6th ST over 8th Street is a steel continuous girder and floorbeam system carrying Rp IS64E to 6th ST over 8th Street in St. Louis city, Missouri. It was built in 1967, so it is 58 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 5,243 vehicles a day, roughly 18% of them trucks, projected to reach 6,554 by 2044. The structure is 477 ft (145.4 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRp IS64E to 6th ST
Crosses8th Street
LocationS 13 T 45 N R 7 E
RouteState Highway 0
CountySt. Louis city
StateMissouri
Coordinates38.62197, -90.1959
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 inspectionApril 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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.7 US tons
Inventory rating24.8 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length477 ft (145.4 m)
Longest span93 ft (28.3 m)
Deck width24 ft (7.4 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic5,243 (2024)
Projected traffic6,554 by 2044
Trucks18%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
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$3.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rp IS64E to 6th ST over 8th Street built?

It was built in 1967, making it 58 years old in 2025.

What condition is Rp IS64E to 6th ST over 8th Street 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 2024.

How much traffic does Rp IS64E to 6th ST over 8th Street carry?

About 5,243 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Rp IS64E to 6th ST over 8th Street?

The structure is 477 ft (145.4 m) long with a longest span of 93 ft (28.3 m) and a deck 24 ft wide.

Who owns Rp IS64E to 6th ST over 8th Street?

It is owned by the State Highway Agency.