US Bridges

Ramp a Tarentum Br over 4th Ave Rampd NS RR

Poor

Allegheny County, Pennsylvania · Tarentum Bridge · Structure no. 000000000001111

Built
1952
73 years old, rebuilt 1986
Condition
Poor
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
576 ft
8 main spans
Daily traffic
18,420
2024 count
Owner
State
State Highway Agency

About this bridge

Ramp a Tarentum Br over 4th Ave Rampd NS RR is a steel stringer/multi-beam or girder carrying Ramp a Tarentum Br over 4th Ave Rampd NS RR in Allegheny County, Pennsylvania. It was built in 1952 and reconstructed in 1986, 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 18,420 vehicles a day, roughly 2% of them trucks, projected to reach 12,752 by 2032. The structure is 576 ft (175.6 m) long and 31 ft wide.

CarriesRamp a Tarentum Br
Crosses4th Ave Rampd NS RR
LocationTarentum Bridge
RouteState Highway 366
Coordinates40.595, -79.75333
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 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 alignment6: Equal to present minimum criteria
Operating rating97 US tons
Inventory rating58 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length576 ft (175.6 m)
Longest span86 ft (26.2 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deck19 ft (5.7 m)

Traffic and service

Average daily traffic18,420 (2024)
Projected traffic12,752 by 2032
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp a Tarentum Br over 4th Ave Rampd NS RR built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1986.

What condition is Ramp a Tarentum Br over 4th Ave Rampd NS RR 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 April 2023.

How much traffic does Ramp a Tarentum Br over 4th Ave Rampd NS RR carry?

About 18,420 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Ramp a Tarentum Br over 4th Ave Rampd NS RR?

The structure is 576 ft (175.6 m) long with a longest span of 86 ft (26.2 m) and a deck 31 ft wide.

Who owns Ramp a Tarentum Br over 4th Ave Rampd NS RR?

It is owned by the State Highway Agency.