US Bridges

North Hanley RD S over Is 70

Fair

St. Louis County, Missouri · S 3082 T 46 N R 6 E · Structure no. 12074

Built
2001
24 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
178 ft
2 main spans
Daily traffic
7,109
2024 count
Owner
State
State Highway Agency

About this bridge

North Hanley RD S over Is 70 is a steel continuous stringer/multi-beam or girder carrying North Hanley RD S over Is 70 in St. Louis County, Missouri. It was built in 2001, so it is 24 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 7,109 vehicles a day, roughly 5% of them trucks, projected to reach 9,953 by 2044. The structure is 178 ft (54.3 m) long and 81 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesNorth Hanley RD S
CrossesIs 70
LocationS 3082 T 46 N R 6 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.7208, -90.31715
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
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 rating82.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length178 ft (54.3 m)
Longest span95 ft (28.9 m)
Deck width81 ft (24.6 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,109 (2024)
Projected traffic9,953 by 2044
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 North Hanley RD S over Is 70 built?

It was built in 2001, making it 24 years old in 2025.

What condition is North Hanley 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 September 2024.

How much traffic does North Hanley RD S over Is 70 carry?

About 7,109 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is North Hanley RD S over Is 70?

The structure is 178 ft (54.3 m) long with a longest span of 95 ft (28.9 m) and a deck 81 ft wide.

Who owns North Hanley RD S over Is 70?

It is owned by the State Highway Agency.