US Bridges

Frazier ST over Csx/Av RR Saline ST

PoorPosted for load

Allegheny County, Pennsylvania · 110 Swinburne Bridge · Structure no. 000000000002457

Built
1915
110 years old, rebuilt 2013
Condition
Poor
inspected October 2022
Type
Girder and Floorbeam System
Steel
Length
599 ft
6 main spans
Daily traffic
6,000
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Frazier ST over Csx/Av RR Saline ST is a steel girder and floorbeam system carrying Frazier ST over Csx/Av RR Saline ST in Allegheny County, Pennsylvania. It was built in 1915 and reconstructed in 2013, so it is 110 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. Its operating status is: posted for load restriction.

It carries about 6,000 vehicles a day, roughly 5% of them trucks, projected to reach 6,600 by 2041. The structure is 599 ft (182.6 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFrazier ST
CrossesCsx/Av RR Saline ST
Location110 Swinburne Bridge
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.42672, -79.95059
Functional classUrban Local

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating26 US tons
Inventory rating15 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans6 (+6 approach)
Design loadHS 20
Structure length599 ft (182.6 m)
Longest span75 ft (22.9 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2021)
Projected traffic6,600 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$711,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Frazier ST over Csx/Av RR Saline ST built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 2013.

What condition is Frazier ST over Csx/Av RR Saline ST 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 October 2022.

How much traffic does Frazier ST over Csx/Av RR Saline ST carry?

About 6,000 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Frazier ST over Csx/Av RR Saline ST?

The structure is 599 ft (182.6 m) long with a longest span of 75 ft (22.9 m) and a deck 30 ft wide.

Who owns Frazier ST over Csx/Av RR Saline ST?

It is owned by the City or Municipal Highway Agency.