US Bridges

Is 70 E over Peruque CR

Fair

St. Charles County, Missouri · S 26 T 47 N R 2 E · Structure no. 6122

Built
1951
74 years old, rebuilt 2000
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
224 ft
3 main spans
Daily traffic
46,152
2024 count
Owner
State
State Highway Agency

About this bridge

Is 70 E over Peruque CR is a steel continuous stringer/multi-beam or girder carrying Is 70 E over Peruque CR in St. Charles County, Missouri. It was built in 1951 and reconstructed in 2000, so it is 74 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 46,152 vehicles a day, roughly 12% of them trucks, projected to reach 78,458 by 2044. The structure is 224 ft (68.3 m) long and 63 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 70 E
CrossesPeruque CR
LocationS 26 T 47 N R 2 E
RouteInterstate 70
CountySt. Charles County
StateMissouri
Coordinates38.80376, -90.7645
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating33.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span80 ft (24.4 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,152 (2024)
Projected traffic78,458 by 2044
Trucks12%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 70 E over Peruque CR built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2000.

What condition is Is 70 E over Peruque CR 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 Is 70 E over Peruque CR carry?

About 46,152 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Is 70 E over Peruque CR?

The structure is 224 ft (68.3 m) long with a longest span of 80 ft (24.4 m) and a deck 63 ft wide.

Who owns Is 70 E over Peruque CR?

It is owned by the State Highway Agency.