US Bridges

Mccartney Lane over Big Sewickley Creek

Fair

Allegheny County, Pennsylvania · SB06 Big Sewickleycr# 6 · Structure no. 000000000002325

Built
1900
125 years old, rebuilt 1992
Condition
Fair
inspected June 2024
Type
Girder and Floorbeam System
Steel
Length
32 ft
1 main span
Daily traffic
10
2006 count
Owner
County
County Highway Agency

About this bridge

Mccartney Lane over Big Sewickley Creek is a steel girder and floorbeam system carrying Mccartney Lane over Big Sewickley Creek in Allegheny County, Pennsylvania. It was built in 1900 and reconstructed in 1992, so it is 125 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 10 vehicles a day, roughly 1% of them trucks, projected to reach 11 by 2028. The structure is 32 ft (9.8 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesMccartney Lane
CrossesBig Sewickley Creek
LocationSB06 Big Sewickleycr# 6
CountyAllegheny County
StatePennsylvania
Coordinates40.61475, -80.14297
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53 US tons
Inventory rating31 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2006)
Projected traffic11 by 2028
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$41,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mccartney Lane over Big Sewickley Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1992.

What condition is Mccartney Lane over Big Sewickley Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Mccartney Lane over Big Sewickley Creek carry?

About 10 vehicles per day (2006 count), of which roughly 1% are trucks.

How long is Mccartney Lane over Big Sewickley Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 17 ft wide.

Who owns Mccartney Lane over Big Sewickley Creek?

It is owned by the County Highway Agency.