US Bridges

Chesterfield Pkwy over Is 64

Fair

St. Louis County, Missouri · S 123 T 45 N R 4 E · Structure no. 34573

Built
2013
12 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
158 ft
2 main spans
Daily traffic
4,738
2024 count
Owner
State
State Highway Agency

About this bridge

Chesterfield Pkwy over Is 64 is a prestressed concrete continuous tee beam carrying Chesterfield Pkwy over Is 64 in St. Louis County, Missouri. It was built in 2013, so it is 12 years old, younger 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.

It carries about 4,738 vehicles a day, roughly 5% of them trucks, projected to reach 7,107 by 2044. The structure is 158 ft (48.2 m) long and 109 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesChesterfield Pkwy
CrossesIs 64
LocationS 123 T 45 N R 4 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.65894, -90.56689
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.
Superstructure7 GoodSome minor problems.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length158 ft (48.2 m)
Longest span76 ft (23.2 m)
Deck width109 ft (33.1 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,738 (2024)
Projected traffic7,107 by 2044
Trucks5%
Lanes on structure7
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Chesterfield Pkwy over Is 64 built?

It was built in 2013, making it 12 years old in 2025.

What condition is Chesterfield Pkwy 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 Chesterfield Pkwy over Is 64 carry?

About 4,738 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Chesterfield Pkwy over Is 64?

The structure is 158 ft (48.2 m) long with a longest span of 76 ft (23.2 m) and a deck 109 ft wide.

Who owns Chesterfield Pkwy over Is 64?

It is owned by the State Highway Agency.