US Bridges

Or 70 E over Sandfort CR

Fair

St. Charles County, Missouri · S 34 T 47 N R 4 E · Structure no. 3521

Built
1984
41 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
8,491
2024 count
Owner
State
State Highway Agency

About this bridge

Or 70 E over Sandfort CR is a concrete continuous culvert carrying Or 70 E over Sandfort CR in St. Charles County, Missouri. It was built in 1984, so it is 41 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 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 8,491 vehicles a day, roughly 4% of them trucks, projected to reach 16,557 by 2044. The structure is 27 ft (8.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOr 70 E
CrossesSandfort CR
LocationS 34 T 47 N R 4 E
RouteState Highway 70
CountySt. Charles County
StateMissouri
Coordinates38.79069, -90.54967
Functional classUrban Collector

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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.2 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.3 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 traffic8,491 (2024)
Projected traffic16,557 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Or 70 E over Sandfort CR built?

It was built in 1984, making it 41 years old in 2025.

What condition is Or 70 E over Sandfort 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 Or 70 E over Sandfort CR carry?

About 8,491 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Or 70 E over Sandfort CR?

The structure is 27 ft (8.3 m) long with a longest span of 10 ft (3 m).

Who owns Or 70 E over Sandfort CR?

It is owned by the State Highway Agency.