US Bridges

Zumbehl RD S over Is 70

Fair

St. Charles County, Missouri · S 3280 T 47 N R 4 E · Structure no. 36928

Built
2022
3 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
161 ft
2 main spans
Daily traffic
15,166
2024 count
Owner
State
State Highway Agency

About this bridge

Zumbehl RD S over Is 70 is a prestressed concrete continuous tee beam carrying Zumbehl RD S over Is 70 in St. Charles County, Missouri. It was built in 2022, so it is 3 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 15,166 vehicles a day, roughly 5% of them trucks, projected to reach 27,299 by 2044. The structure is 161 ft (49.1 m) long and 180 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesZumbehl RD S
CrossesIs 70
LocationS 3280 T 47 N R 4 E
RouteCity Street 0
CountySt. Charles County
StateMissouri
Coordinates38.79188, -90.56574
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 rating74.4 US tons
Inventory rating44.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length161 ft (49.1 m)
Longest span81 ft (24.6 m)
Deck width180 ft (54.8 m)
Roadway width164 ft (49.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,166 (2024)
Projected traffic27,299 by 2044
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Zumbehl RD S over Is 70 built?

It was built in 2022, making it 3 years old in 2025.

What condition is Zumbehl RD S over Is 70 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 October 2023.

How much traffic does Zumbehl RD S over Is 70 carry?

About 15,166 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Zumbehl RD S over Is 70?

The structure is 161 ft (49.1 m) long with a longest span of 81 ft (24.6 m) and a deck 180 ft wide.

Who owns Zumbehl RD S over Is 70?

It is owned by the State Highway Agency.