US Bridges

Grand Blvd S over Is 64

Fair

St. Louis city, Missouri · S 16 T 45 N R 7 E · Structure no. 6397

Built
1954
71 years old, rebuilt 1982
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
88 ft
1 main span
Daily traffic
17,514
2024 count
Owner
State
State Highway Agency

About this bridge

Grand Blvd S over Is 64 is a concrete tee beam carrying Grand Blvd S over Is 64 in St. Louis city, Missouri. It was built in 1954 and reconstructed in 1982, so it is 71 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.

It carries about 17,514 vehicles a day, roughly 5% of them trucks, projected to reach 24,520 by 2044. The structure is 88 ft (26.8 m) long and 80 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesGrand Blvd S
CrossesIs 64
LocationS 16 T 45 N R 7 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.63147, -90.23483
Functional classUrban Other Principal Arterial

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 inspectionJuly 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating77.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length88 ft (26.8 m)
Longest span88 ft (26.8 m)
Deck width80 ft (24.4 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,514 (2024)
Projected traffic24,520 by 2044
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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$1.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Grand Blvd S over Is 64 built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1982.

What condition is Grand Blvd S 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 July 2023.

How much traffic does Grand Blvd S over Is 64 carry?

About 17,514 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Grand Blvd S over Is 64?

The structure is 88 ft (26.8 m) long with a longest span of 88 ft (26.8 m) and a deck 80 ft wide.

Who owns Grand Blvd S over Is 64?

It is owned by the State Highway Agency.