American Bridge Co. (1,521)
Built 1910 (1,165)
Built during 1910s (9,667)
Chicago & North Western Railway (1,407)
Chicago, Illinois (334)
Cook County, Illinois (461)
Curved (461)
Girder (10,295)
Illinois (4,677)
| Open (39,970)
Owned by railroad (12,492)
Plate girder (7,979)
Railroad (15,595)
Skewed (4,915)
Span length 50-75 feet (10,102)
Through girder (3,840)
Total length 500-1000 feet (2,876)
Union Pacific Railroad (2,375)
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