US Bridges

Rp IS170W to IS270 over Or 270

Good

St. Louis County, Missouri · S 939 T 47 N R 6 E · Structure no. 29201

Built
2002
23 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
245 ft
3 main spans
Daily traffic
22,425
2024 count
Owner
State
State Highway Agency

About this bridge

Rp IS170W to IS270 over Or 270 is a prestressed concrete continuous stringer/multi-beam or girder carrying Rp IS170W to IS270 over Or 270 in St. Louis County, Missouri. It was built in 2002, so it is 23 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 22,425 vehicles a day, roughly 18% of them trucks, projected to reach 28,031 by 2044. The structure is 245 ft (74.7 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRp IS170W to IS270
CrossesOr 270
LocationS 939 T 47 N R 6 E
RouteState Highway 0
Coordinates38.77433, -90.33989
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.5 US tons
Inventory rating38.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length245 ft (74.7 m)
Longest span90 ft (27.4 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,425 (2024)
Projected traffic28,031 by 2044
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 IS170W to IS270 over Or 270 built?

It was built in 2002, making it 23 years old in 2025.

What condition is Rp IS170W to IS270 over Or 270 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Rp IS170W to IS270 over Or 270 carry?

About 22,425 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Rp IS170W to IS270 over Or 270?

The structure is 245 ft (74.7 m) long with a longest span of 90 ft (27.4 m) and a deck 43 ft wide.

Who owns Rp IS170W to IS270 over Or 270?

It is owned by the State Highway Agency.