US Bridges

Is 70 E over Sandford CR

Fair

St. Charles County, Missouri · S 34 T 47 N R 4 E · Structure no. 4600

Built
1953
72 years old, rebuilt 1961
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
122,262
2024 count
Owner
State
State Highway Agency

About this bridge

Is 70 E over Sandford CR is a concrete continuous culvert carrying Is 70 E over Sandford CR in St. Charles County, Missouri. It was built in 1953 and reconstructed in 1961, so it is 72 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 5 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 122,262 vehicles a day, roughly 12% of them trucks, projected to reach 207,845 by 2044. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 70 E
CrossesSandford CR
LocationS 34 T 47 N R 4 E
RouteInterstate 70
CountySt. Charles County
StateMissouri
Coordinates38.78989, -90.55037
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.4 US tons
Inventory rating47.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122,262 (2024)
Projected traffic207,845 by 2044
Trucks12%
Lanes on structure5
Traffic directionTwo-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 Sandford CR built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1961.

What condition is Is 70 E over Sandford 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 November 2023.

How much traffic does Is 70 E over Sandford CR carry?

About 122,262 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Is 70 E over Sandford CR?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Is 70 E over Sandford CR?

It is owned by the State Highway Agency.