Josh Schmid, License: Creative Commons Attribution-Share-Alike (CC BY-SA) Partially open bridge from northwest
When I searched for Ashtabula to check out what was left of the NYC/LS&MS ore docks, Google Maps offered the following as the "signature" photo for the town.
This looked similar to a Strauss heel-trunnion bascule bridge design, but there were enough differences that I suspected it was designed by someone else and the differences avoided patent infringement. Sure enough, Bridge Hunter indicates the "Patent Engineer/Design" is Thomas Ellis Brown. And Historic Bridges indicates it is one of the few surviving Brown type bascule bridges left in the country, and the only one in Ohio.
(Update: The 1911 Bridge Hunter page for the Duwamish River Bridge was my source concerning Strauss' earlier design.) The railroad bridge may have been owned by a terminal railroad that allowed NYC, NKP and Pennsy to access the ore docks. The bridge is an early Strauss heel-trunnion design. And, unlike other early designs I have seen, this 1911 bridge has not been converted to Strauss' later design. This early design has the machinery room on top of the movable span and the operating strut is fixed to the counterweight tower. By 1919, Strauss had moved the machinery room to the counterweight tower and fixed the operating strut to the movable span. Below is a closeup of the two bridges on the South Branch of the Chicago River that have the modern design. I highlighted the operating strut of the near bridge, which is closed, in red and the strut of the far bridge, which is open, in yellow. You can see that the strut comes out the back of the tower as the bridge is raised. That photo allows you to compare the modern design with the earlier design still used in this bridge.
20150513 1427, cropped plus Paint
In this earlier design, the strut moves into the span. And you can see the machinery house on top of the movable span.
Walter Gunter posted N&S Drawbridge. Ashtabula harbor. N.E. Ohio. Walter GunterWorked as a Conrail brakeman in the mid 70s . We moved alot of coal & ore over it.Mike ShinskyI was there this summer the yard is for mostly stone now.
( Bridge Hunter , Historic Bridges , HAER , Satellite ) P&LE = Pittsburgh & Lake Erie Railroad Photo from HAER PA,4-BEAV,1--1 from pa3716 One of 26 images posted by Mike Brady [Many of the images show the stresses calculated for each member of the truss.] Pictures are of the original Stress sheet of the P&LE cantilever bridge at Monaca - Beaver PA . Appears to be drawn on vellum type paper using a ink well pen. All of the math about the bridge is here. Live load,dead load, impact load and wind load Date is Jan. 31, 1908. Bought this on eBay around 20 years ago. Was unaware at the time of purchase of what I was getting. Wow, when I actually received it. Total calculated design load on one of the main bearings is 11,994.000 or 12 million pounds or ( 6 thousand tons). One of 26 images posted by Mike Brady Photo taken by Bob Harris in May 2012 from Bridge Hunter ( new window ) Mark Arnold posted five photos with the comment: " CSX's Ohio River cross...
Because any remaining old style signals are going to soon be replaced to implement Positive Train Control, some railfans are taking pictures of the signals instead of trains. B&O and Pennsy were the two railroads that had their own unique design of signal heads. I have already covered Pennsy's yellow light positional design . This is looking south along the former B&O branch line (Cincinnati, Hamilton & Dayton) in Deshler, OH . The tracks just on the other side of the depot is the former B&O mainline to Chicago. Both of these routes are now CSX. 20151101 5338,cropped I cropped the above picture to make it a little easier to see that the horizontal red lights really are lit up. Also, you can see in the lower left corner that the signal head for southbound traffic on the southeast quadrant has a stop aspect. I stepped to the side for the closeup because I was trying to reduce the effect of the sun that was still rather high in the sky. What I inadvertently did was dem...
( Satellite , three slips allowed them to make six ships at a time because they were launched sideways.) Later, they switched to fewer, but bigger ships. They were built in a dry dock and then floated out. Pete Martin posted My grandfather in drydock 2 at shipyard. Prob 1966. Dennis DeBruler It started as Chicago Shipbuilding Co. in 1890. https://chicagology.com/harbor/chicagoshipbuildingco/ Tony Margis posted Chicago_Tribune_Sun__Feb_21__1960_ Laura Findeisen Layman I remember seeing these in dry dock. Rod Sellers posted View from the Skyway by Daily Calumet photographer, June 5 1974
Worked as a Conrail brakeman in the mid 70s . We moved alot of coal & ore over it.Mike Shinsky I was there this summer the yard is for mostly stone now.
Comments
Post a Comment