US Bridges

Rp IS64E to IS70E over Is 64

Fair

St. Charles County, Missouri · S 30 T 47 N R 2 E · Structure no. 2199

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
197 ft
3 main spans
Daily traffic
15,798
2024 count
Owner
State
State Highway Agency

About this bridge

Rp IS64E to IS70E over Is 64 is a steel continuous stringer/multi-beam or girder carrying Rp IS64E to IS70E over Is 64 in St. Charles County, Missouri. It was built in 1971, so it is 54 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 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 15,798 vehicles a day, roughly 13% of them trucks, projected to reach 26,857 by 2044. The structure is 197 ft (60 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRp IS64E to IS70E
CrossesIs 64
LocationS 30 T 47 N R 2 E
RouteState Highway 0
CountySt. Charles County
StateMissouri
Coordinates38.80427, -90.83232
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
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 rating60.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length197 ft (60 m)
Longest span73 ft (22.3 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,798 (2024)
Projected traffic26,857 by 2044
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 Rp IS64E to IS70E over Is 64 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Rp IS64E to IS70E 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 Rp IS64E to IS70E over Is 64 carry?

About 15,798 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Rp IS64E to IS70E over Is 64?

The structure is 197 ft (60 m) long with a longest span of 73 ft (22.3 m) and a deck 41 ft wide.

Who owns Rp IS64E to IS70E over Is 64?

It is owned by the State Highway Agency.