US Bridges

Spirit of ST Louis over Is 64

FairPosted for load

St. Louis County, Missouri · S 371 T 45 N R 3 E · Structure no. 1852

Built
1968
57 years old, rebuilt 2010
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
240 ft
2 main spans
Daily traffic
789
2024 count
Owner
State
State Highway Agency

About this bridge

Spirit of ST Louis over Is 64 is a steel continuous stringer/multi-beam or girder carrying Spirit of ST Louis over Is 64 in St. Louis County, Missouri. It was built in 1968 and reconstructed in 2010, so it is 57 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 6 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 789 vehicles a day, roughly 5% of them trucks, projected to reach 1,184 by 2044. The structure is 240 ft (73 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSpirit of ST Louis
CrossesIs 64
LocationS 371 T 45 N R 3 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.67454, -90.64558
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 20
Structure length240 ft (73 m)
Longest span86 ft (26.2 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic789 (2024)
Projected traffic1,184 by 2044
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Spirit of ST Louis over Is 64 built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2010.

What condition is Spirit of ST Louis over Is 64 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 October 2024.

How much traffic does Spirit of ST Louis over Is 64 carry?

About 789 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Spirit of ST Louis over Is 64?

The structure is 240 ft (73 m) long with a longest span of 86 ft (26.2 m) and a deck 41 ft wide.

Who owns Spirit of ST Louis over Is 64?

It is owned by the State Highway Agency.