US Bridges

Rp MO370W to IS70E over Is 70 Mo 370

Fair

St. Charles County, Missouri · S 29 T 47 N R 4 E · Structure no. 11738

Built
1994
31 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,004 ft
3 main spans
Daily traffic
443
2024 count
Owner
State
State Highway Agency

About this bridge

Rp MO370W to IS70E over Is 70 Mo 370 is a steel continuous stringer/multi-beam or girder carrying Rp MO370W to IS70E over Is 70 Mo 370 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 443 vehicles a day, roughly 10% of them trucks, projected to reach 753 by 2044. The structure is 1,004 ft (306 m) long and 30 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRp MO370W to IS70E
CrossesIs 70 Mo 370
LocationS 29 T 47 N R 4 E
RouteState Highway 0
CountySt. Charles County
StateMissouri
Coordinates38.79891, -90.59161
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.6 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+6 approach)
Design loadHS 20 + Mod
Structure length1,004 ft (306 m)
Longest span133 ft (40.5 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic443 (2024)
Projected traffic753 by 2044
Trucks10%
Lanes on structure1
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 Rp MO370W to IS70E over Is 70 Mo 370 built?

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

What condition is Rp MO370W to IS70E over Is 70 Mo 370 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 December 2023.

How much traffic does Rp MO370W to IS70E over Is 70 Mo 370 carry?

About 443 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rp MO370W to IS70E over Is 70 Mo 370?

The structure is 1,004 ft (306 m) long with a longest span of 133 ft (40.5 m) and a deck 30 ft wide.

Who owns Rp MO370W to IS70E over Is 70 Mo 370?

It is owned by the State Highway Agency.