US Bridges

Rt K S over Is 64

Fair

St. Charles County, Missouri · S 1669 T 46 N R 3 E · Structure no. 29119

Built
2002
23 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
213 ft
2 main spans
Daily traffic
18,874
2024 count
Owner
State
State Highway Agency

About this bridge

Rt K S over Is 64 is a steel continuous stringer/multi-beam or girder carrying Rt K S over Is 64 in St. Charles County, Missouri. It was built in 2002, so it is 23 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 18,874 vehicles a day, roughly 5% of them trucks, projected to reach 33,973 by 2044. The structure is 213 ft (64.9 m) long and 87 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesRt K S
CrossesIs 64
LocationS 1669 T 46 N R 3 E
RouteState Highway 0K
Coordinates38.71409, -90.70373
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.3 US tons
Inventory rating49.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length213 ft (64.9 m)
Longest span113 ft (34.4 m)
Deck width87 ft (26.4 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,874 (2024)
Projected traffic33,973 by 2044
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt K S over Is 64 built?

It was built in 2002, making it 23 years old in 2025.

What condition is Rt K 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 September 2023.

How much traffic does Rt K S over Is 64 carry?

About 18,874 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Rt K S over Is 64?

The structure is 213 ft (64.9 m) long with a longest span of 113 ft (34.4 m) and a deck 87 ft wide.

Who owns Rt K S over Is 64?

It is owned by the State Highway Agency.