US Bridges

Bower Hill RD over Mclaughlin Run

Fair

Allegheny County, Pennsylvania · ML01 Mclaughlin Run #1 · Structure no. 000000000002561

Built
1941
84 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
52 ft
2 main spans
Daily traffic
17,000
2005 count
Owner
County
County Highway Agency

About this bridge

Bower Hill RD over Mclaughlin Run is a concrete culvert carrying Bower Hill RD over Mclaughlin Run in Allegheny County, Pennsylvania. It was built in 1941, so it is 84 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 5 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 17,000 vehicles a day, roughly 5% of them trucks, projected to reach 21,585 by 2023. The structure is 52 ft (15.8 m) long and 55 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBower Hill RD
CrossesMclaughlin Run
LocationML01 Mclaughlin Run #1
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.35913, -80.10926
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating52 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span26 ft (7.9 m)
Deck width55 ft (16.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,000 (2005)
Projected traffic21,585 by 2023
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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$399,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bower Hill RD over Mclaughlin Run built?

It was built in 1941, making it 84 years old in 2025.

What condition is Bower Hill RD over Mclaughlin Run 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 April 2023.

How much traffic does Bower Hill RD over Mclaughlin Run carry?

About 17,000 vehicles per day (2005 count), of which roughly 5% are trucks.

How long is Bower Hill RD over Mclaughlin Run?

The structure is 52 ft (15.8 m) long with a longest span of 26 ft (7.9 m) and a deck 55 ft wide.

Who owns Bower Hill RD over Mclaughlin Run?

It is owned by the County Highway Agency.