US Bridges

Killarney DR over Saw Mill Run

Poor

Allegheny County, Pennsylvania · 416002 at Route 88 · Structure no. 000000000002569

Built
1955
70 years old
Condition
Poor
inspected July 2024
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
1,500
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Killarney DR over Saw Mill Run is a concrete culvert carrying Killarney DR over Saw Mill Run in Allegheny County, Pennsylvania. It was built in 1955, so it is 70 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 1,500 vehicles a day, roughly 5% of them trucks, projected to reach 1,750 by 2039. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKillarney DR
CrossesSaw Mill Run
Location416002 at Route 88
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.374, -80.00666
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating24 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2018)
Projected traffic1,750 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$62,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Killarney DR over Saw Mill Run built?

It was built in 1955, making it 70 years old in 2025.

What condition is Killarney DR over Saw Mill Run 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 July 2024.

How much traffic does Killarney DR over Saw Mill Run carry?

About 1,500 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Killarney DR over Saw Mill Run?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m).

Who owns Killarney DR over Saw Mill Run?

It is owned by the City or Municipal Highway Agency.