1926,1938+1971 10mw+50mw Mormon Flat Dam on Salt River and Canyon Lake

(Satellite)

Bureau of Reclamation posted
Located east of Phoenix, Mormon Flat Dam impounds Canyon Lake, a favorite recreation area for boating and fishing. It was the first dam constructed under Salt River Project’s hydroelectric expansion program in the 1920s. Mormon Flat Dam was named after nearby Mormon Flat, a place where pioneers from Utah stopped to camp on their way to the valley

clui
"The Mormon Flat Dam was completed in 1926, the first of three dams along the lower Salt River, between Theodore Roosevelt Lake and Phoenix, two of which have powerhouses with reversible turbines, enabling pumped storage functions. The Mormon Flat hydroelectric plant has a conventional turbine, producing 10 megawatts, and a reversible unit that was installed in 1971, adding another 50 megawatts to the plant’s generating capacity, and enabling the plant to pump water backwards through the Salt River Project system, a network of several hydropower plants and reservoirs that provide electricity to the Phoenix region."

 

usbr
"Mormon Flat Dam, a 224-foot high concrete thin-arch structure,...creates a 57,852 acre-foot reservoir.
"In 1938, Reclamation completed construction of a new gate structure and a concrete-lined spillway discharge channel, and installed two 50-foot-square stoney regulating gates, hoists, motors, two 25-kilovolt-ampere gasoline-engine driven generators, and a new road to the powerhouse."

 

Jake Taraj, Dec 2022

 

LoC

LoC

Trail Bridges at Ionia, MI

Grand Trunk: (Satellite)

Gateway Overpass: (Bridge Hunter; Satellite)

1881 Pere Marquette: (Bridge Hunter)

1914 Pere Marquette: (Bridge Hunter; Satellite)

While studying the GTW depot in Ionia, I discovered that they have some non-trivial trail bridges. The former GTW right-of-way is now the Fred Meijer Grand River Valley Trail, and the former Pere Marquette RoW is now the Ionia River Trail. Both of the railroad bridges go over the Grand River. Some significant money was put into the trail system around Ionia.

GTW Bridge:

Edward Gross, Dec 2015

2015 Gateway Overpass:

Street View, Aug 2023

1881 PM:

BridgeHunter_1881
[It is not obvious in this photo, but it is obvious in the photo below that they added new piers between the existing piers because the steel girder spans are shorter than the truss spans. I'm still trying to figure out how they added the steel girders under the trusses, but in this photo they are removing the trusses since the girders are now carrying the tracks. As expected given the 1881 date, the trusses appear to be pin connected.]

1914 PM:

Pamala Thurber, Apr 2021

The Gateway Overpass is a tied arch. It was probably built offsite and then moved to the abutments to minimize the closure of the state highway. Not only did they build a new bridge, they built the embankments needed to create an overpass. Here is a view back when the trail crossed at grade level.

Street View, Oct 2013

The GTW bridge is on the west side and the PM bridge is on the east side.

Dennis DeBruler

Replacing the Francis Scott Key Bridge over Patapsco River at Baltimore, MD

I'm seeing enough information about replacing the Francis Scott Key Bridge that was destroyed on Mar 26, 2024 that it is time to starts some notes about the replacement because I anticipate a lot of design and construction information.

Casey Jones Nov 23, 2024, video of 22:04: Why the Replacement Key Bridge Needs to be Antifragile! [The video includes a book review. He also talks about the new design for this bridge at 12:30]

Maryland via TruckDriverNews via Facebook
[I just skimmed the text because I was after a rendition of the design. For all of the talk about the economic impact of the destroyed bridge, one would think someone would have funded some better dolphins for the old bridge. I could not find an estimated completion date.]

Casey Jones found a better rendition of the preliminary design. The silver lining of destroying the old bridge is that the deck of the new bridge will be higher. This is important because the size of container ships keep growing. He also found an estimated completion date of 2028.

6:34 video @ 0:45

In fact, the height is increasing from 185' to 230'.

@ 1:08

The Practical Engineer (Grady Hillhouse) just posted a couple of days ago an explanation as to why most new long-span bridges are cable-stayed bridges. It occurred to me that it is appropriate to include here.

20:18 video @ 12:06

M&E Feeder Canal and St. Ate Diversion Dam on Great Miami River near Port jefferson, OH

Dam: (Satellite, it has been washed out)

Feeder Canal Headwaters: (Satellite)

Feeder Canal: (Satellite, the algae on the stagnant water makes it easy to identify.)

M&E = Miami & Erie Canal

I discovered this feeder canal while studying the B&O bridge over the Great Miami River and River Road.

Satellite

From that Canal Feeder Park, I followed the canal upstream until I found the diversion dam.

1913/34 Sidney Quad @ 62,500

Some of this feeder canal is now part of the Canal Feeder Trail.

Christy Leigh Wilkins, Dec 2022

In the Lockington area, there is more left of this feeder canal than there is of the original canal. I marked where the canal leaves the Great Miami River Valley and heads west to provide water for the five locks in Lockington.

Satellite

As the canal went downstream along the river from the diversion dam, it climbed a bluff so that it would be on top of the bluff where it then heads west to Lockington.

1914/31 Troy Quad @ 62,500

CSX/B&O/CH&D over Great Miami River and over O&E Feeder Canal Trail in Sidney, OH

B&O Bridge: (Bridge Hunter (Archived); no Historic Bridges; Satellite)

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

CH&D = Cincinnati, Hamilton & Dayton Railway

O&E = Ohio & Erie Canal

Photo by James Baughn, 2009 via BridgeHunter_B&O

MP Rail Photography posted

CSX 3247 leads M508 northbound on the Toledo Sub, seen here crossing over the former B&O bridge.  While the Big 4 Bridge gets all the attention in Sidney, this bridge is not even a mile away and crosses the Great Miami River with an elegance all its own.

January 26, 2025

Sidney, Ohio

Power:

CSX 3247 - ES44AH

CSX 6555 - GP40-3

Photo by James Baughn, 2009 via BridgeHunter_feeder

I do wish a street view driver had gone down River Road. I can't determine if the road is going through an exceptionally wide pier or through the south abutment.

Photo by James Baughn, 2009 via BridgeHunter_B&O

The feeder canal trail is part of a larger trail system.

Sharon Osborne, Mar 2021

Conway Scenic Willey Brook and Frankenstein Trestles near Crawford Notch, NH

Willey Brook: (Satellite)

Frankenstein: (Satellite)

Crawford Notch: (Satellite)

The Conway Scenic Railroad in this area uses a former Maine Central route.

I noticed that this bridge is in the vicinity as the crow flies of Mt. Washington. I have no idea how many miles separate them as the car drives.

Dave Blaze Rail Photography posted

For today's IG post and FB repost here's one of my absolute favorites from 2018 at a legendary railroad location amidst the fall splendor that the region is renowned for.

Conway Scenic GP38 252 (ex Maine Central), Boston and Maine F7 4266, and Conway Scenic GP9 1751 lead the Notch Train east down grade from the 1900 ft elevation at the top of Crawford Notch. The train will descend 1375 ft in the 25 miles back to North Conway.

Undoubtedly the scenic highlight on Maine Central's old Mountain Subdivision, this place just has to be experienced to be fully appreciated. There is nowhere else in the world of New England railroading that even compares.

Willey Brook Bridge

Crawford Notch, New Hampshire

Saturday October 6, 2018

Rust Belt Railroading shared

Might be going out here in the autumn when I go to see family! That’s bottoms train scheduled to leave Conway around 9 AM on October 28 from what I saw on their site.

Willey Brook Trestle:

Ms E., Mar 2023

Frankenstein Trestle:

Sean Frazier, Sep 2020

I noticed that the Frankenstein Trestle is included in Conway Scenic Railroad map. So that is why I also checked out that trestle.

 Map via Dennis DeBruler

1897 Trail/Southern Bridge over Etawah River in Rome, GA

(Satellite)

Jeff Mooneyhan posted three photos with the comment: "Old rail bridge in Rome, Georgia over the Etowah River, built in 1897. Next to the bridge are old pylons from a bridge built in 1845."

1

2

3

This closeup helps confirm that it was a pin-connected truss.

Merry, Oct 2018

1967/71 Rome North and 1968/1970 Rome South Quads @ 24,000