1910s+1980s 9.1mw Little Quinnesec Dam and Aban/C&NW Bridge over Menominee River at Niagara, WI

Dam: (Satellite)

Bridge: (Archived Bridge Hunter was broken; Bridge Hunter; no Historic Bridges, Satellite)

1910s is when the turbines were installed, 1980s is when they were converted from mechanical power to electrical generation.

EagleCreekRE
"The Little Quinnesec hydro facility is a 9,100-kilowatt hydroelectric generating station in the town of Niagara, Wisconsin.  It was originally built to power a pulp and paper mill that operated on the site from the 1898 through 2012.  The station contains six total units.  Five of the units are horizontal, double-runner Francis turbines that were installed between 1900 and 1911 to provide mechanical power for pulp grinders.  Motors were added between 1920 and 1960 to provide supplemental power to the grinders.  In the 1980s, the grinders were removed, and the motors were reconfigured as generators and have produced electrical power since then.  The sixth unit is a vertical Francis turbine installed in 1916 to provide electrical power to the mill.  Since 2009, all electrical power has been delivered into the regional electrical transmission grid."

The 1916 unit used a vertical shaft because thrust bearings made horizontal shafts obsolete. Those thrust bearing notes have diagrams of how the horizontal shaft turbines worked.

City of Niagara, Wisconsin posted two photos with the comment:

The river is flowing and the gates are open.

Photo credit: Pam Miller

Edited to add: Photographer is authorized to access the property. It is not open to the public.

1

2

Facebook Reel

The truss bridge in the background of the above screenshot was for a C&NW industrial spur to the pulp and paper mill. I can't tell if it is a pin-connected truss.

1955/82 Norway Quad @ 24,000

The dam is in the right side of this photo.

Brian Grimmer commented on his post

Apr 2023:

Facebook Reel

Nicole Collins video from her comment on a reel

I had assumed that the truss bridges in the left background of the above screenshot carried the industrial spur. But the screenshot below indicates that they might be carrying pipes.

Jason found a better angle.

Facebook Reel

1925 2mw Hattie Street or Menominee Dam on Menominee River at Marinette, WI

(Satellite)

EagleCreekRE
"The Menominee power station is a 2,074-kilowatt hydroelectric generating station in the town of Menominee, Michigan. The facility is equipped with two Allis Chalmers turbine units and two Leffel Vertical turbines. It produces approximately 15 million kilowatt-hours of clean energy in a typical year. The Menominee facility began commercial operation in 1925."

Street View, Aug 2025

Street View, Aug 2025

Apr 2026:

Tim Olsen commented on a reel
Menominee dam, all 11 gates open. Never seen that before; over 60 years.

1897+2005 NS/Pennsy Bridges over Beaver River at Wampum, PA

1897: (Archived Bridge Hunter is broke; Bridge Hunter; no Historic Bridges)

2005: (Satellite)

It was owned by a Pennsy subsidiary: Pittsburgh, Youngstown & Ashtabula Railroad, Bridge #13

1897 Bridge

The trusses were made with wrought iron. [HAER_data]

HAER PA,37-WAMP,1--2
2. Oblique view of south elevation, looking east from western abutment. - Pittsburgh, Youngstown & Ashtabula Railroad, Bridge No. 13, Spanning Beaver River, South of State Route 288 Bridge, Wampum, Lawrence County, PA

HAER PA,37-WAMP,1--6 (CT)
6. Overview of north elevation, looking SE from west bank of Beaver River, with train on bridge. - Pittsburgh, Youngstown & Ashtabula Railroad, Bridge No. 13, Spanning Beaver River, South of State Route 288 Bridge, Wampum, Lawrence County, PA

HAER PA,37-WAMP,1--4
4. Oblique view of easternmost truss span, looking west from eastern abutment, with train on bridge. Note that next spans is occluded by sharp curvature of bridge. - Pittsburgh, Youngstown & Ashtabula Railroad, Bridge No. 13, Spanning Beaver River, South of State Route 288 Bridge, Wampum, Lawrence County, PA

2005 Bridge

Street View, Oct 2013

Big Boy 2006:

MP Rail Photography posted

Having just left Conway, NS 061, with the Big Boy leading, crosses over the Beaver River at Wampum.

July 12, 2026

Wampum, PA

Power:

UP 4014 - 4-8-8-4 Steam Locomotive (Big Boy)

UP 1616 - SD70M (Abraham Lincoln Unit)

NS 2026 - SD70ACe

NS 250 - SD70ACe

NS 1776 - SD70ACe

UP 1776 - SD70M

Mississippi Lock and Dam #21 near Quincy, IL

(John A Weeks III; Satellite)

USACE

USACE, Rock Island District posted

It's another birthday today with Lock and Dam 21 in Quincy, Illinois, turning 88 years young! Construction began on the lock structure on December 11, 1933, with the entire system placed in operation on this date [July 23] in 1938.

Interesting fact: Due to to a lack of funding at the time, the lock was completed one year before construction of the dam began.

JohnWick

USACE, Rock Island District posted

A satellite caught a 15-barge tow being reassembled so that it can continue its trip upstream.

Satellite

1926 US-66 Bridge over Timber Creek east of Sayre, OK

(Archived Bridge Hunter; Bridge Hunter; Satellite)

US-66 Overview

Street View, Apr 2024

Street View, Jun 2024

2009 photo by John Cross via BridgeHunter

Don Lindsley posted
Timber Creek Bridge, OK

Today's frontage road was the original US-66 route.

route66

1878+1962 NS/Southern/CNO&TP Nemo Tunnels #22, #23 and #24 near Wartburg, TN

Old #22: (Archived Bridge Hunter; Bridge Hunter; Satellite, south portal. Note bridge pier just south of the portal.)

#23: (Archived Bridge Hunter; Bridge Hunter; Satellite, north portal)

Old #24: (Archived Bridge Hunter; Bridge Hunter; Satellite, south portal)

New #22: (Archived Bridge Hunter; Bridge Hunter; Satellite, south portal)

NS Bridge: (Archived Bridge Hunter; Bridge Hunter; Satellite)

New #24: (Archived Bridge Hunter; Bridge Hunter; Satellite, south portal)

1929 Pedestrian Bridge: (Archived Bridge Hunter; Bridge Hunter; no Historic Bridges; Satellite)

CNO&TP = Cincinnati, New Orleans & Texas Pacific

1 of 29 photos posted by Matt Murphy
Nemo Tunnel last week [Jul 2026]— at Nemo Tunnel.
[Note that the tunnel provides plenty of clearance for double-stack container cars.]

I think Matt was at the south portal of New #24.

"First Train", company photographer via BridgeHutner_new_#24

The old tunnels were built in 1878. The were 15' (4.6m) wide and 20' (6m) high. In 1962, they were bypassed by tunnels that were 20' (6m) wide and 30' (9.1m) high. Old #24 was replaced by an adjacent New #24. Old #22 and #23 were replaced by New #22 and a new bridge on a new alignment. The right-of-way with the new tunnels is in purple in this map. The tunnels marked with dashed black lines are the old tunnels.

1980/88 Lancing Quad @ 24,000

In addition to building new tunnels, a lot of dirt was moved. This view of the north portal of New #24 also shows the new NS bridge over the Emory River.

company photographer via BridgeHutner_new_#24

Looking the other way along the bridge, we se the south portal of New #22.

2012 photo by Shane Passmore via BridgeHunter_new_#22

1906+1927 Nemo Bridge

There is a third span hidden in the trees because over half of this bridge is over a flood plain.

Street View, Sep 2015

It is faint, but we can see the third truss in this photo.

BridgeHunter_pedestrian

I think 1923 is a late date to still be building a pin-connected bridge.

2010 photo by Calvin Sneed via BridgeHunter_pedestrian

RedGlobeReflections

We can see a hint of the third truss in this photo.

2010 photo by Calvin Sneed via BridgeHunter_pedestrian

193,1987,2026 Charles Anderson Bridge in Pittsburgh, PA

(Archived Bridge Hunter; Bridge Hunter; Historic Bridges; pghbridges; Satellite)

Trail View, Oct 2008

HistoricBridges
"This massive deck truss bridge is one of the few surviving patented Wichert truss bridges in existence....The bridge was designed by the City of Pittsburgh, which had to license the Wichert truss design. On the bridge plaque, the Wichert Continuous Bridge Corporation is named as patentee."
This 780' (238m) long bridge has a man span of 360' (110m).

3:36 video @ 2:39
Frustrating stops and starts of Charles Anderson Bridge project