US Bridges

Mo 370 E over Sandfort CR

Fair

St. Charles County, Missouri · S 22 T 47 N R 4 E · Structure no. 4116

Built
1994
31 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
44 ft
3 main spans
Daily traffic
42,230
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 370 E over Sandfort CR is a concrete culvert carrying Mo 370 E over Sandfort CR in St. Charles County, Missouri. It was built in 1994, so it is 31 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 42,230 vehicles a day, roughly 5% of them trucks, projected to reach 71,791 by 2044. The structure is 44 ft (13.5 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesMo 370 E
CrossesSandfort CR
LocationS 22 T 47 N R 4 E
RouteState Highway 370
CountySt. Charles County
StateMissouri
Coordinates38.8189, -90.55456
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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
DeckNot applicable
Main spans3
Design loadHS 20
Structure length44 ft (13.5 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,230 (2024)
Projected traffic71,791 by 2044
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 370 E over Sandfort CR built?

It was built in 1994, making it 31 years old in 2025.

What condition is Mo 370 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 Mo 370 E over Sandfort CR carry?

About 42,230 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mo 370 E over Sandfort CR?

The structure is 44 ft (13.5 m) long with a longest span of 14 ft (4.3 m).

Who owns Mo 370 E over Sandfort CR?

It is owned by the State Highway Agency.