Monday, September 15, 2025

1952+2010 I-76 Bridges and C. W. Bill Young L&D on Allegheny River near Oakmont,PA

2010: (Archived Bridge Hunter; Bridge HunterSatellite) Pennsylvania Turnpike
Dam: (Satellite)

Postcard via BridgeHunter_1952

This is a view of the C. W. Bill Young Lock & Dam through the B&LE Bridge from the I-76 bridge.
Street View, Nov 2024

A view of the lock & dam from the B&LE Bridge.
Robert Suchevits, Aug 2016

The 1952 bridge was just to the left (east, upstream) of the new bridge.
Street View, Jun 2025

It looks like the 2010 bridge is made with concrete segmental box girders.
Street View, Jun 2025

During construction of the 2010 bridge
Global Earth, Oct 2008

After the switchover, but before the demolition.
Global Earth, Jul 2010

That is the B&LE Bridge in the background.
USACE, Pittsburgh District posted
Did you know C. W. Bill Young Locks and Dam, upstream of Pittsburgh on the Allegheny River, has a quirky little feature hiding in pla#navigation 
Well, had…
Back in the 1930s when the facility was being built, engineers made a one-fifth scale model of a modified taintor gate on the fixed-crest dam. It was meant to help test new ideas for future projects, but apparently it didn't make the cut because the experimental gate no longer there. 
That’s why one section of the dam looks a little different than the rest - giving the water flow there a slightly different look.
Winn Gnutt: It was a model of the Sydney gate installed at Hemsworth [Emsworth] when the gates were installed on the original fixed crest dam. Then locks one(1) on both the allegheny and money were removed.

I didn't see the notch in most of the images, but it looks like this images shows it near the north shore.
Global Earth, Jun 2016

A decent view of the lock.
HAER PA,2-OAK.V,1--1 via Dennis DeBruler

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