US Bridges

Or 70 E over Rp MO370W to IS70E Rp I

Fair

St. Charles County, Missouri · S 29 T 47 N R 4 E · Structure no. 4105

Built
1995
30 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
884 ft
6 main spans
Daily traffic
5,460
2024 count
Owner
State
State Highway Agency

About this bridge

Or 70 E over Rp MO370W to IS70E Rp I is a prestressed concrete continuous tee beam carrying Or 70 E over Rp MO370W to IS70E Rp I in St. Charles County, Missouri. It was built in 1995, so it is 30 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 5,460 vehicles a day, roughly 8% of them trucks, projected to reach 10,647 by 2044. The structure is 884 ft (269.4 m) long and 45 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesOr 70 E
CrossesRp MO370W to IS70E Rp I
LocationS 29 T 47 N R 4 E
RouteState Highway 70
CountySt. Charles County
StateMissouri
Coordinates38.8012, -90.59024
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
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.3 US tons
Inventory rating52.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6 (+3 approach)
Design loadHS 20 + Mod
Structure length884 ft (269.4 m)
Longest span115 ft (35.1 m)
Deck width45 ft (13.8 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,460 (2024)
Projected traffic10,647 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Or 70 E over Rp MO370W to IS70E Rp I built?

It was built in 1995, making it 30 years old in 2025.

What condition is Or 70 E over Rp MO370W to IS70E Rp I 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 Or 70 E over Rp MO370W to IS70E Rp I carry?

About 5,460 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Or 70 E over Rp MO370W to IS70E Rp I?

The structure is 884 ft (269.4 m) long with a longest span of 115 ft (35.1 m) and a deck 45 ft wide.

Who owns Or 70 E over Rp MO370W to IS70E Rp I?

It is owned by the State Highway Agency.