US Bridges

Ramp S over Ramp R 02266 Rps. Forbes

Poor

Allegheny County, Pennsylvania · Birmingham Bridge · Structure no. 000000000001321

Built
1952
73 years old, rebuilt 1984
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,303 ft
20 main spans
Daily traffic
10,761
2024 count
Owner
State
State Highway Agency

About this bridge

Ramp S over Ramp R 02266 Rps. Forbes is a steel continuous stringer/multi-beam or girder carrying Ramp S over Ramp R 02266 Rps. Forbes in Allegheny County, Pennsylvania. It was built in 1952 and reconstructed in 1984, so it is 73 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 10,761 vehicles a day, roughly 4% of them trucks, projected to reach 12,518 by 2032. The structure is 1,303 ft (397.2 m) long and 28 ft wide.

CarriesRamp S
CrossesRamp R 02266 Rps. Forbes
LocationBirmingham Bridge
RouteState Highway 885
Coordinates40.43333, -79.96667
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans20
Design loadHS 20
Structure length1,303 ft (397.2 m)
Longest span99 ft (30.2 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic10,761 (2024)
Projected traffic12,518 by 2032
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp S over Ramp R 02266 Rps. Forbes built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1984.

What condition is Ramp S over Ramp R 02266 Rps. Forbes in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Ramp S over Ramp R 02266 Rps. Forbes carry?

About 10,761 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Ramp S over Ramp R 02266 Rps. Forbes?

The structure is 1,303 ft (397.2 m) long with a longest span of 99 ft (30.2 m) and a deck 28 ft wide.

Who owns Ramp S over Ramp R 02266 Rps. Forbes?

It is owned by the State Highway Agency.