US Bridges

Mid Rivers Mall DR over Is 70

Fair

St. Charles County, Missouri · S 762 T 47 N R 4 E · Structure no. 3484

Built
1983
42 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
237 ft
2 main spans
Daily traffic
1,752
2024 count
Owner
State
State Highway Agency

About this bridge

Mid Rivers Mall DR over Is 70 is a steel continuous stringer/multi-beam or girder carrying Mid Rivers Mall DR over Is 70 in St. Charles County, Missouri. It was built in 1983, so it is 42 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 1,752 vehicles a day, roughly 15% of them trucks, projected to reach 3,154 by 2044. The structure is 237 ft (72.2 m) long and 58 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesMid Rivers Mall DR
CrossesIs 70
LocationS 762 T 47 N R 4 E
RouteCity Street 0
CountySt. Charles County
StateMissouri
Coordinates38.79977, -90.62027
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
Deck7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.4 US tons
Inventory rating43.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length237 ft (72.2 m)
Longest span100 ft (30.4 m)
Deck width58 ft (17.6 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,752 (2024)
Projected traffic3,154 by 2044
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 Mid Rivers Mall DR over Is 70 built?

It was built in 1983, making it 42 years old in 2025.

What condition is Mid Rivers Mall DR over Is 70 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 Mid Rivers Mall DR over Is 70 carry?

About 1,752 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Mid Rivers Mall DR over Is 70?

The structure is 237 ft (72.2 m) long with a longest span of 100 ft (30.4 m) and a deck 58 ft wide.

Who owns Mid Rivers Mall DR over Is 70?

It is owned by the State Highway Agency.