US Bridges

Rp IS70E to IS170W over Rp IS170W to IS70W

Fair

St. Louis County, Missouri · S 656 T 46 N R 6 E · Structure no. 2569

Built
1981
44 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
326 ft
4 main spans
Daily traffic
8,055
2024 count
Owner
State
State Highway Agency

About this bridge

Rp IS70E to IS170W over Rp IS170W to IS70W is a steel continuous stringer/multi-beam or girder carrying Rp IS70E to IS170W over Rp IS170W to IS70W in St. Louis County, Missouri. It was built in 1981, so it is 44 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 8,055 vehicles a day, roughly 10% of them trucks, projected to reach 10,069 by 2044. The structure is 326 ft (99.4 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRp IS70E to IS170W
CrossesRp IS170W to IS70W
LocationS 656 T 46 N R 6 E
RouteState Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.73193, -90.33161
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 inspectionSeptember 2024
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 alignment6: Equal to present minimum criteria
Operating rating65.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length326 ft (99.4 m)
Longest span90 ft (27.4 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,055 (2024)
Projected traffic10,069 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 IS70E to IS170W over Rp IS170W to IS70W built?

It was built in 1981, making it 44 years old in 2025.

What condition is Rp IS70E to IS170W over Rp IS170W to IS70W 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 Rp IS70E to IS170W over Rp IS170W to IS70W carry?

About 8,055 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rp IS70E to IS170W over Rp IS170W to IS70W?

The structure is 326 ft (99.4 m) long with a longest span of 90 ft (27.4 m) and a deck 34 ft wide.

Who owns Rp IS70E to IS170W over Rp IS170W to IS70W?

It is owned by the State Highway Agency.