Sylvan Island Railroad Bridge
A Statement of Significance
Written by Nathan HolthThis bridge is a nationally significant bridge as an exceedingly rare surviving example of an early generation metal railroad bridge. Nearly all of these earlier generation railroad bridges were lost due to a need for stronger railroad bridges which occurred around the turn of the 20th Century. The bridge is further significant for its cast iron connection assemblies, use of Phoenix columns for the end posts and most vertical members, and the Whipple truss configuration. The bridge was moved here in 1891, having been salvaged from a Mississippi River Bridge in Burlington, Iowa. The bridge was shortened by 45 feet at this time. As such, the bridge is a rare example of a bridge that represents the materials and designs of an early Mississippi River bridge. This bridge is one of the most significant historic structures in the region, but currently sits abandoned and forgotten. It is both historically and technologically significant.
Facts
- Overview
- 1 Span Whipple through truss bridge with Phoenix columns over Mississippi River on former railroad spur in Moline.
- Location
- Moline, Rock Island County, Illinois
- Status
- Abandoned.
- History
- Built 1868 as part of a larger bridge over the Mississippi River at Burlington; one span relocated here and shortened in 1891
- Builder
- - Detroit Bridge & Iron Works of Detroit, Michigan
- Railroad
- - Chicago, Burlington & Quincy Railroad (CBQ)
- Design
- Whipple through truss with Phoenix column end posts and pinned connections. Includes cast iron connection assemblies.
- Dimensions
-
Span length: 202.0 ft.
Total length: 202.0 ft.
Deck width: 16.0 ft.
- Approximate latitude, longitude
- +41.51072, -90.53278 (decimal degrees)
41°30'39" N, 90°31'58" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 15/705894/4598393 (zone/easting/northing)
- Quadrangle map:
- Davenport East
- Inventory number
- BH 37343 (Bridgehunter.com ID)
Update Log
- April 20, 2018: New photos from John Marvig
- February 22, 2015: New Street View added by Luke
- December 28, 2012: New photos from John Marvig
- June 18, 2012: Updated by Luke Harden: Added builder
- March 22, 2012: Updated by Luke Harden: Added category "Chicago, Rock Island & Pacific Railroad"
- February 24, 2011: Updated by Nathan Holth: Made Corrections/Adjustments, Added Flickr Links, and a Statement of Significance.
- August 28, 2008: Added by Kim Harvey
Related Bridges
- CBQ - First Burlington Bridge (Parts reused from)
Sources
- Kim Harvey
- Flickr Photo - Portal View
- Flickr Photo - Portal View (Hi-Res Photo)
- Nathan Holth
- John Weeks Highways, Byways, And Bridge Photography
- Flickr Photo - Elevation
- Flickr Photo - Portal View On Bridge
- Flickr Photo - View Beside Bridge
- Luke
- Book
- John Marvig - marvigj27 [at] gmail [dot] com
- John Marvig Railroad Bridge Photography
Comments
I just looked at the pictures again. Is the entire (not just the connections) top chord cast iron?!?
Who should be contacted regarding the possible relocation/preservation of this bridge? I agree with previous comments. This bridge should be recognized on a national level, and should be at least open to the public. Currently, the owner fenced it off with cameras and a high barbwire fence. At the bare minimum, the fence should be on the other side and a solid deck be added for fishing and recreation purposes. Someone needs to step up with this bridge.
This bridge is a GREAT candidate for relocating and restoration as a pedestrian bridge. We need a local heavy crane service and house moving companies to 'step-up' and offer to relocate this piece of history to a public park. I am sure the owner would contribute the bridge itself. I live elsewhere, but a homegrown 'movement' is needed here!
This bridge is indeed an original survivor of the CB&Q bridge at Burlington, Iowa and is on private property owned by MidAmerican Energy Co. Fishing and foot traffic are prohibited.
Maybe forgotten wasn't the best word, but what I meant was for a bridge of its significance (one of the oldest metal bridges in the country, especially this far west) it isn't getting a lot of attention in terms of being photographed, restored, or recognized in interpretive signage, etc. I bet a lot of the people who use the bridge are unaware of how old the bridge is or why its significant. A particular oddity is that it does not appear to be HAER documented. Most cast iron truss bridges are HAER documented. Its like they didn't know it was there.
Nathan this bridge is hardly "forgotten" by the public. I see people often fishing from it or walking/running across it. It is "abandoned," but it is being re-used, although not "officially."
Nathan says that it's from an old CB&Q bridge in his little entry up.
Very fascinating...sounds like Jim indeed has a match here!
Jim Stewart did some poking around and found that this bridge could be a span originally from the Chicago, Burlington and Quincy (CB&Q) Bridge at Burlington, Iowa. The Detroit Bridge and Iron Works completed the bridge in 1868, which is the builder and construction date we have listed for this bridge.
Source:
http://www.historycooperative.org/journals/sia/31.1/jackson....
I have read that railroad bridges of cast iron/wrought iron construction were subject to a large number of failures and regarded as a hazard during the 19th century. They were not well thought of or trusted. The iron parts would fail with very little notice.
This page's URL is http://bridgehunter.com/il/rock-island/sylvan-island-rail/
Yes it is a cast iron top chord. http://historicbridges.org/bridges/browser/?bridgebrowser=il...