US Bridges

Is 64 E over Black CR

Fair

St. Louis County, Missouri · S 16 T 45 N R 6 E · Structure no. 5990

Built
1956
69 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
48 ft
2 main spans
Daily traffic
152,770
2024 count
Owner
State
State Highway Agency

About this bridge

Is 64 E over Black CR is a concrete continuous culvert carrying Is 64 E over Black CR in St. Louis County, Missouri. It was built in 1956, so it is 69 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 152,770 vehicles a day, roughly 12% of them trucks, projected to reach 190,963 by 2044. The structure is 48 ft (14.5 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 64 E
CrossesBlack CR
LocationS 16 T 45 N R 6 E
RouteInterstate 64
CountySt. Louis County
StateMissouri
Coordinates38.62977, -90.34572
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length48 ft (14.5 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic152,770 (2024)
Projected traffic190,963 by 2044
Trucks12%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 64 E over Black CR built?

It was built in 1956, making it 69 years old in 2025.

What condition is Is 64 E over Black CR 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 November 2023.

How much traffic does Is 64 E over Black CR carry?

About 152,770 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Is 64 E over Black CR?

The structure is 48 ft (14.5 m) long with a longest span of 20 ft (6.1 m).

Who owns Is 64 E over Black CR?

It is owned by the State Highway Agency.