When one thinks of large train bridges in Alberta or even Canada for that matter, the Lethbridge Viaduct instantly comes to mind for most. Its massive size means an equally massive notoriety and it’s clearly the most famous of its type. However scatted nearby throughout the southern half of the province are a number of interesting railway bridges of similar appearance and of substantial size, like the one seen here in Carmangay Alberta.
Located on CPR’s Aldersyde Subdivision the bridge is just north of the village, which itself is some sixty kilometres north of Lethbridge. Access is easy and one can view the structure by following an easy and marked foot path that takes you to its base.
Alas there were no trains to be seen on our visit which is always a bummer. This is a secondary line home to perhaps a half dozen freights per day (give or take a huge margin – I’ve heard as many as ten, and as few as one). The lay of land allows for some very good train pictures to be taken should one arrive, but we were not so fortunate. No worries, the bridge itself is still very photogenic.
The rail line came through here in the years 1910-11 and in fact Carmangay was the northern terminus of the line for a short time while the bridge was being built (not the one we see, but an earlier one). As a result it was a boom town for a few fleeting seasons.
The original structure was a large but temporary wooden trestle spanning the valley with a steel section only over the river. These types of bridges were often used on newly constructed lines as they could be quickly built allowing traffic to flow with a minimum of delay. Being made of wood however means they are quite a maintenance nightmare and when time and money allowed they were often replaced by steel spans.
As was the case here and the structure we see is dated 1927 on one of its piers. In addition, the approach ways on the southern side were filled in with earth allowing the new span to be shorter in length. An interesting feature is that each pier or pier set is numbered, starting from the south.
At the north end of the bridge there is a steep drop and the strata shows bands of sandstone layered in the soil. The bank on the south end has a totally different personality and the grade from the coulee bottom up to the rail line is quite gentle in comparison.
While nowhere near as large as Lethbridge’s this example is still a huge piece of engineering and is quite a sight to see. One thing I find fascinating, even though it was built some eighty five years ago, it has no trouble supporting the much heavier trains of today. It seems that railway infrastructure was always overbuilt, reflecting the “make this thing last as long as possible” attitude these firms subscribed to.
Published data on the bridge lists it as 150m long and 44m high. The famous railway construction firm of Foley, Stewart and Welch was listed as the original contractor. It’s not know however if they built the the original or put in place the current one, or perhaps they did both. This company is well know for constructing many railway lines in Canada.
In the case of bridges like this, components were supplied by a outside steel firm. Perhaps Dominion Bridge, who seemed to be the most prolific supplier of that era. This is just a shot in the dark though and this author did not find a builders plate on the structure confirming who made the steel bits.
One thing of interest to those viewing the pictures is the state of the track on the bridge. It appear quite uneven, but this is mostly an optical illusion due to the length of zoom being used.
The river here is called the Little Bow which heads south of Carmangay before finally draining into the Oldman River near Picture Butte. While this little shallow waterway shares a name with the much larger Bow River to the north, the two do not connect. The Bow River is less than a kilometre from my home. Found near the watercourse was the remains of a fibreglass mold. Who knows where it’s from and how it got here (wind?) is anyone’s guess.
There is evidence of aboriginal peoples having populated this coulee for many thousands of years and nearby one can find evidence of tipi (or is it teepee) rings. These are circular groupings of large rocks that were used to anchor the bottom animal hide lip of the lodge.
While not clear in my pictures, there is remains of an old road into town nearby. One can see the cuts and fills as it travelled down into the valley, crossing a gully and later the river before finally looping under the train bridge and heading south into Carmangay. The current highway by passes the town by perhaps a couple kilometres.
To see the very photogenic Emmanuel Anglican Church in Carmangay, follow this link…
Little Church on the prairie.
To see the much larger but otherwise similar looking bridge in nearby Monarch Alberta, go here…
Bridge hunting – Monarch Alberta.
If you wish more information on this place, by all means contact us!
Date: February, 2013.
Location: Carmangay, AB.