US Bridges

Is 64 W over CO North Forty DR to Sor

Poor

St. Louis County, Missouri · S 13 T 45 N R 4 E · Structure no. 3343

Built
1985
40 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
238 ft
3 main spans
Daily traffic
71,687
2024 count
Owner
State
State Highway Agency

About this bridge

Is 64 W over CO North Forty DR to Sor is a steel continuous stringer/multi-beam or girder carrying Is 64 W over CO North Forty DR to Sor in St. Louis County, Missouri. It was built in 1985, so it is 40 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 71,687 vehicles a day, roughly 8% of them trucks, projected to reach 89,609 by 2044. The structure is 238 ft (72.5 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 64 W
CrossesCO North Forty DR to Sor
LocationS 13 T 45 N R 4 E
RouteInterstate 64
Coordinates38.64234, -90.51033
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length238 ft (72.5 m)
Longest span100 ft (30.5 m)
Deck width52 ft (16 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71,687 (2024)
Projected traffic89,609 by 2044
Trucks8%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 64 W over CO North Forty DR to Sor built?

It was built in 1985, making it 40 years old in 2025.

What condition is Is 64 W over CO North Forty DR to Sor in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Is 64 W over CO North Forty DR to Sor carry?

About 71,687 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Is 64 W over CO North Forty DR to Sor?

The structure is 238 ft (72.5 m) long with a longest span of 100 ft (30.5 m) and a deck 52 ft wide.

Who owns Is 64 W over CO North Forty DR to Sor?

It is owned by the State Highway Agency.