Industrial History

Wednesday, September 9, 2026

I'm done for now because of a Google bug

About 2:30pm on Sep 9, 2026, when I tried adding a photo to a post, it did not work. Blogger did the upload, but the photo never appeared in the post. I tried some things to work around the problem such as a different post, a different photo, deleting an existing photo in case I was at some unknown limit, a different browser, waiting a few hours, waiting several hours, etc. Nothing worked. So, I'm giving up for now. I'll do a test each day to see if the photo upload got fixed. When fixed, I'll resume posting.

Tuesday, September 8, 2026

1962 I-66+US-50 Theodore Roosevelt Bridge over Potomac River at Washington, DC

(Bridge Hunter; Historic Bridges; Satellite)

Boat View, Sep 2014

Metrotrails added
Theodore Roosevelt Bridge completed in 1964, over the Potomac River from the Rock Creek Trail, Washington DC.
Metrotrails shared

HistoricBridges
"This large bridge is noted for its arched, riveted girders which feature a pin and hanger cantilever design."

Several ramps are built over the river on the west end.

Trail View, Jan 2023

trbridge

The bridge is being rehabilitated.

trbridge

Monday, September 7, 2026

Miami & Erie Canal Lock #15, Canal Boat and Roller Mill in Tipp City, OH

Lock: (Satellite)

Boat: (Satellite)

Mill: (Satellite)

Miami & Erie Canal Overview

A lock means there is a grade separation of water so a mill next to it makes sense.

Street View, Oct 2016

4 of 8 photos posted by Tim Snyder with the comment: "Visited two locks from the Miami and Erie Canal. The first four photos are from Canal Lock Park in Huber Heights, OH. Sadly, the park has no historical markers for the casual visitor. The next four are from Canal Lock Park in Tipp City, OH, which did indeed have a historical marker that identified the lock as Lock Number 15 on the Miami and Erie Canal. Adjacent to the lock is what appears to be replica canal packet boat in need of maintenance."

Vivian Davis: Canal boat in Tipp is not a replica

Randy Westfall: In Miami co there are still lock 16 which is on private property

Lock 15 in Tipp

14 and 13 on the bike path between Troy and Tipp

12 was in Troy where Kettering hospital is now 11 would of been at eldean rd

Lock 10 was at Farington road 12-10 are no longer standing

Lock 9 Piqua

Lock 8 Johnston farm

7 landman mill road

6 just south of landman mill

The last five are just south of Miami County in lockington

There are still 8 standing in Miami co

4, cropped

The canal boat is behind the mill, and it appears they already did a lot of restoration work.

Street View, Oct 2016

TippRollerMill
The mill building is now a live-music event venue.

The railroad was the B&O/Cincinnati, Hamilton & Dayton.

1904/56 Dayton Quad @ 62,500

1897,1932,1999 Panther Hallow Road Bridge over Panther Hollow in Pittsburgh, PA

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

Schenley Bridge is a similar arch bridge that is a few blocks north of this one.

Postcard via BridgeHutner

"Significance: Schenley Park Bridge over Panther Hollow includes design elements from the City Beautiful movement while utilizing Pittsburgh's "native" industry: steel. An elegant three-hinged steel arch, the bridge is a contributing structure to Phipps Conservatory and the Schenley Park Historic District, both listed in the National Register of Historic Places. " [HAER_data]

Trail View, Jan 2024

HAER photo via HistoricBridges
This 640' (195m) long bridge has a main span of 260' (110m).
"This bridge is a very old and large example of steel arch technology, and is also a rare example of a three-hinged deck arch. Just as noteworthy are the bridge's stone arch approach spans. These feature the rare elliptical shape of stone arch."

A close up of the elliptical stone arches.

HAER PA,2-PITBU,77--2
2. Northern approach stone arch permits access to park in Panther Hollow below. - Schenley Park Bridge over Panther Hollow, Spanning Panther Hollow at Panther Hollow Road, Pittsburgh, Allegheny County, PA

Steel City History posted
PITTSBURGH, THEN AND NOW 🌉 This is the Panther Hollow Bridge in Schenley Park, photographed in the early 1900s spanning the wooded ravine near what's now Carnegie Mellon University. Fast forward to today: the bridge just reopened to vehicle traffic after being closed since October 2024 for safety repairs. Same span, same hollow, generations of Pittsburghers crossing it.

HAER photo via BridgeHunter

2012 photo by Joseph via BridgeHunter

"The 'Panthers' by Giuseppe Moretti (1859-1935) provide the signature which easily distinguishes the pair of structures. A bronze mountain lion stands ready for the hunt at each corner of the Panther Hollow Bridge." [pghbridges]

Street View, Nov 2020

Sunday, September 6, 2026

1898 IANR/Rock Island Arch Bridge over Mud Creek at Vinton, IA

(Bridge Hunter; no Historic Bridges; Satellite)

IANR = Iowa Northern Railway

Dan Sabin posted
Vinton IA BCR&N built Stone Arch Bridge still exists Dan Sabin Collection

Photo provided by Hank Zaletel via BridgeHunter

2017 photo by John Marvig via BridgeHunter

The stone abutments have not been covered with concrete.

2013 photo by Dave King via BridgeHunter
"View of the north side of east stone abutment."

The route was owned by Rock Island.

1954/68 Waterloos Quad @ 250,000

Bridge Hunter indicates the route is now owned by IANR, but rail.guide indicates CN.

rail.guide

IANR is still claiming this route.

Map via Dennis DeBruler

1928,1999-2018 Kanawha Falls Bridge over Kanawha River near Kanawha Falls, WV

(Bridge Hunter; Historic Bridges; Satellite)

Street View, Jun 2021

Southern West Virginia Online posted four photos with the comment:

The Kanawha Falls Bridge has now been closed for nearly eight years…
The bridge was shut down in November 2018 after a structural failure caused part of the bridge deck to drop about five inches. Inspections later uncovered additional deterioration and structural concerns.
Today, the nearly century-old bridge across the Kanawha River remains closed to traffic.