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Iron Ore Creek Bridge


Iron ore creek warren pony

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BH Photo #247978



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Posted by Jesse Sharkoman Berube



This 60'-9"-long, twelve-panel riveted Warren pony truss was built around 1911 by the Midland Bridge Company of Kansas City, Missouri. It originally spanned Iron Ore Creek at Grayson County Route 597, but has been relocated to Loy Lake Park near Denison, Texas. It survives in its present location as one of only a few extant bridges erected by the Midland Bridge Company in Texas, and in its original location it served as an important local transportation link in the development of Grayson County's agricultural economy.

Between 1910 and 1912 the first macadamized road in Texas was built from Denison to Carpenter's Bluff on the Red River, and the first county-wide road system, virtually all gravel, was established in 1915.7 However, in the first decade of the century most of the roads in Grayson County were dirt, and the bridges erected across these roads were designed to serve only one lane of wagon traffic. Midland Bridge Company It was during these early years of the century that Midland Bridge Company expanded its operations into Grayson County.

Like most surviving Warren trusses, the Iron Ore Creek Bridge was built with vertical members. One design aspect of the bridge worthy of note is that all diagonal and vertical members are laced, except for the first two diagonals at either end of the span. These members are solid steel channels. The inclined end posts and top chord are made of steel I-beams measuring l'-0" x 4 7/8" and 1/8" thick. These members are stamped "Cambria," indicating that they were rolled by the Cambria Steel Company of Johnstown, Pennsylvania. This company was one of the most important iron and steel producing facilities in America during the second half of the nineteenth century, and was greatly increasing its production of finished products during the period when Midland was most active in Texas.

The laced verticals of the bridge are 2 1/2" x 1 1/2" angles, laced together with 13" long, 1 3/4" wide lacing bars. The gusset plates connecting the verticals and diagonals at the top and bottom are 5" x 11 3/4" rectangles made of 1/8" thick steel. The top and bottom rails are 1 3/8" x 3" channels, supported by 3" x 2 1/2" vertical angles at the ends. The railing is 60'-8 3/4" long, and since the outside end of the bearing plates are where the end verticals of the railing terminate, the length of the rail is also the length of the truss. The floor beams are 15" x 3 3/8" channels made of l/8"-thick steel. The entire structure is riveted. The Iron Ore Creek Bridge was stripped, primed and repainted when moved to its present location in Loy Lake Park near Denison, and is in good condition. It should survive well into the twenty-first century as a valuable artifact from an important period in the history of Grayson County, and as a rare example of the work of the Midland Bridge Company in Texas.



Warren pony truss bridge formerly over Iron Ore Creek on County Road 597
Grayson County, Texas
Relocated to Public Park
Built around 1911 by the Midland Bridge Company of Kansas City, Missouri.It originally spanned Iron Ore Creek at Grayson County Route 597, but has been relocated to Loy Lake Park near Denison, Texas.
- Midland Bridge Co. of Kansas City, Missouri
Twelve-panel riveted Warren pony truss with concrete deck
Span length: 60.0 ft.
Total length: 60.0 ft.
Deck width: 15.0 ft.
Also called
Loy Lake Park Bridge
Approximate latitude, longitude
+33.73277, -96.58953   (decimal degrees)
33°43'58" N, 96°35'22" W   (degrees°minutes'seconds")
Approximate UTM coordinates
14/723321/3735136 (zone/easting/northing)
Quadrangle map:
Inventory number
BH 55431 (Bridgehunter.com ID)

Update Log 

  • July 2, 2022: Document added by Jesse Sharkoman Berube
  • November 23, 2014: Updated by M C Toyer: Adjusted location and added photos
  • February 5, 2013: Updated by Luke Harden: Corrected builder.
  • February 3, 2013: Added by aaron leibold