1800s+1940+1968 Pennsylvania Turnpike Tuscarora Mountain Tunnel near Wilow Hill, PA

(Satellite)

West Portal:

Street View, May 2025

East Portal:

Street View, Nov 2025

This railroad tunnel became the original turnpike tunnel. In 1940, they added an eastbound tunnel south of this tunnel. Then in 1968 this original tunnel was replaced by a newer tunnel. The daily usage is 24,000. [gftinc]

Jackson-Township historical preservation posted

Photo from 1938 of a long tunnel bored through the mountain with Huntingdon County on the west side and Franklin County on the east and although completed, it was never used for the purpose for which it had been constructed many decades before. This was originally constructed for a railroad but tracks were never laid and the tunnel was converted to use as one of the original Tuscarora Tunnels for the Pennsylvania Turnpike which began construction in 1939. A surveyor in the photo is doing work for the proposed change of use from a rail tunnel to that of the Turnpike.

(Photo from Steve Kemp via https://www.facebook.com/groups/208623169187266/)

Robert Salinetro: I think it was built by the New York Central RR when they were trying to compete with the PRR and they were talked out of finishing the plan. The turnpike took over some of the track right of way for the initial road.

[Indeed. And the Pennsy was building a railroad up the west side of the Hudson River to compete with the NYC. JP Morgan met with the railroads and talked them out of the suicidal redundancy.]

Some of the tunnels on the turnpike have been daylighted. But this tunnel is below 1100' through a mountain that is over 1800'. So a 700' deep dut is too much even for modern equipment. 

1966/69 Fannettsburg Quad @ 24,000

gftinc
In the 2020s, the lanes in the 1940 eastbound bore were widened. Also, management of infiltrating water, ventilation, lighting and control electronics were improved. "A dark coating on the exterior portals, in combination with an illuminated tunnel interior, will help counteract motorists’ tendency to slow down when approaching a dark entrance, improving traffic flow through the tunnels."

WoodsAirMovement
The mile-long tunnel now has 12 modern axial exhaust fans.
"The 6 foot [1.8m] exhaust fans are designed to extract hazardous pollution if traffic is standing still in the tunnel - or smoke in the event of a fire - quickly and efficiently to allow safe evacuation and easier access for emergency services."

Erie Bridge over Delaware River near Port Jervis,NY

(Archived Bridge Hunter; Bridge Hunter; no Historic Bridges; Satellite)

Street View, Apr 2025

Bosira Khatun posted

The spring runoff has raised the Delaware River above its banks, but the Erie Lackawanna is high and dry as a trio of U25Bs leads an eastbound freight from the Pennsylvania side into New York and ... 

Railroad: Erie Lackawanna

Locomotive: GE U25B

Location: Port Jervis, New York, USA

Locomotive #: 2518

Train ID: TC-2

Photo Date: April 03, 1970

HAER PA,52-MILRI,1--1
1. April 1971. AERIAL RECONNAISSANCE I, ERIE RAILWAY SURVEY. - Erie Railway, Delaware River Bridge, Spanning Delaware River, S. of Cherry Island, Millrift, Pike County, PA

1975 photo by Scott Wertans via BridgeHunter

2017 photo by Patrick Gurwell via BridgeHunter

This bridge has both pin connection and riveted gussets, so it was built during the transition period. That is, the early 20th century.

Street View, Apr 2025

1969/72 Poart Jervis North Quad @ 24,000

1915 9mw Hinckley Dam on West Canada Creek near Hinckley, NY

(Satellite)

OnedaCountyTourism
Originally constructed in the early 1900s to supply water to the Erie Canal, this scenic reservoir now serves multiple purposes — from outdoor recreation to drinking water supply and hydropower generation.

Street View, Oct 2013

DispatchesFromSamuelCenter
It is 3700' (1128m) long with a 400' (122m) spillway.

Keith Ferrante, Sep 2021

I could not find the capacity of this outlet conduit.

wktv

Facebook Reel

Kevin Abbey: That was at 1229.82, which is approximately 4’ 9” (57”) over the damn 😳

Frank Guido: Just a few weeks ago there was some who had concerns that the Hinckley Reservoir was too low. What a difference a few weeks make.

Chad Rivers: There's normally 6 to 8 feet below the dam on the other side. I don't think I've seen it running over like this in decades.

The Jarvis powerhouse has a capacity of 9mw using two units, and it went online in 1991. [HydroReform]

Barge Canal Dry Dock in Lockport, NY

(Satellite)

There is a larger dry dock in Lyons, NY.

The dock for the canal cruise boats is in the background on the other side of the canal.

Street View, Jul 2011

Gil Eaton posted six photos with the comment:

Life along the Erie Canal...

     Lockport. Working on repairs to the trundle gate at the dry dock. 😎

[So what is a trundle gate?]

1

2

3

4

5

6

Mark Jones posted
Our machinist Dave working the Dewitt in Lockport drydock

Court Street Dam and Bridges on Genesee River in Rochester, NY

Dam: (Satellite)

Bridge: (Archived Bridge Hunter; Bridge Hunter; no Historic Bridges; Satellite)

Dam Bridge: (Historic Bridges)

Erie Canal overview

Looking upstream (South) at Court Street Bridge from Broad Street Bridge.

Street View, Jun 2025

View looking upstream at Court Street Dam and Bridge from Court Street Bridge. The I-490 Frederick Douglass-Susan B. Anthony Memorial Bridge is in the background.

Street View, Jun 2017

I wonder if the public can use this bridge over the dam.

HistoricBridges

Because the Genesee River intersects with the Barge Canal upstream from here, the dam controls the level of the canal. Thus the "canalErie" label on these notes.

3 of the 4 images posted by Jeff Miller with the comment:

I’m taking a walk around Rochester this afternoon, April 12, 2026.

     The Court Street Dam is keeping Rochester’s Barge Canal Inner Harbor from flooding over the embankments today; lots of water flow on the Genesee!

a, a screenshot from a video

b

c, cropped

Because the dam is just a little downstream of the I-490 bridge, all of the views I have seen of that bridge have about the same river level. Instead of the river level changing, the flow rate in the river changes.

HighSteel via Dennis DeBruler

The dam was built with a bunch of sluice gates.

Digitally Zoomed, 2x

By 1927, the sluice gates were replaced with sector gates.

Digitally Zoomed

Actually, the operation of these gates should be like bear trap gates in that values can be used instead of pumps. To raise a gate, valves on the upstream side of the chamber are opened. To lower the gate, valves on the downstream side of the chamber are opened.

Digitally Zoomed, 2x

In all of the views and photos I have looked at of the dam, they lowered the sector gates before they let the water flow over the fixed weir on the east side. So this photo of the sector gates being dry while the weirs are spilling water caught my eye. Looking closer, they are not using the sector gates because they are doing construction in the downstream river bed.

Ethan Corona, Dec 2019

I wish I could read the text.

Ethan Corona, Dec 2019

And this is what all of that spilled water is doing downstream at the former aqueduct.

Facebook Reel

Barge Canal Lock #18 at Jacksonburg, NY

(Satellite)

Erie Canal Overview

Antonio Mandurano, Sep 2025

nycanalmap

It seems that the gates always leak.

Barb D (Barb D), Oct 2024

Frank Gillette posted
Bring in the big guns Little Falls

Frank Gillette posted
Lock 18 Repair 1993

1914 4.4mw + 1949 16mw Big Quinnesec/Hydraulic Falls Dam on Menominee River near Iron Mountain, MI

(Satellite)

Facebook Reel

First plant constructed: 1914

Maximum generation: 4,400 kilowatts

Second plant constructed: 1949

Maximum generation: 16,000 kilowatts

[we-energies]

"The Big Quinnesec Falls Hydroelectric Facility consists of a 92-Foot Head Powerhouse, a 61-Foot Head Powerhouse, four 12-foot diameter steel penstocks, and a dam that holds a 270-acre impoundment." [usgov]

All but one Parker gate is now open.

Jason Asselin - Videos, News & More posted, cropped
5 flood gates are now open on Big Quinnesec Falls Dam in East Kingsford, MI on the Menominee River! Watch the mist rise higher than this 83'