US Bridges

Kingshighway Blvd over Cst Clayton Ave

Good

St. Louis city, Missouri · S 19 T 45 N R 7 E · Structure no. 32236

Built
2008
17 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
45,152
2024 count
Owner
State
State Highway Agency

About this bridge

Kingshighway Blvd over Cst Clayton Ave is a prestressed concrete stringer/multi-beam or girder carrying Kingshighway Blvd over Cst Clayton Ave in St. Louis city, Missouri. It was built in 2008, so it is 17 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 45,152 vehicles a day, roughly 5% of them trucks, projected to reach 63,213 by 2044. The structure is 66 ft (20 m) long and 142 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesKingshighway Blvd
CrossesCst Clayton Ave
LocationS 19 T 45 N R 7 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.63319, -90.26638
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating42.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length66 ft (20 m)
Longest span63 ft (19.2 m)
Deck width142 ft (43.4 m)
Roadway width126 ft (38.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,152 (2024)
Projected traffic63,213 by 2044
Trucks5%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Kingshighway Blvd over Cst Clayton Ave built?

It was built in 2008, making it 17 years old in 2025.

What condition is Kingshighway Blvd over Cst Clayton Ave in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Kingshighway Blvd over Cst Clayton Ave carry?

About 45,152 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Kingshighway Blvd over Cst Clayton Ave?

The structure is 66 ft (20 m) long with a longest span of 63 ft (19.2 m) and a deck 142 ft wide.

Who owns Kingshighway Blvd over Cst Clayton Ave?

It is owned by the State Highway Agency.