1. A Bridge Too Plain To Be Original
By Nicholas Mendoza

2. My Bridge

3. Dennis H. Mahan Memorial Bridge
Project ID: 00054A
Iteration #65 (Thu, 7 Feb 2013, 10:50:12)
Type of Cost Item Cost Calculation Cost
Material Cost (M) Carbon Steel Solid Bar (537.3 kg) x ($3.78 per kg) x (2 Trusses) = $4,062.11
Carbon Steel Hollow Tube ( kg) x ($6.30 per kg) x (2 Trusses) = $44,250.17
High-Strength Low-Alloy Steel Solid Bar (452.2 kg) x ($4.62 per kg) x (2 Trusses) = $4,177.96
High-Strength Low-Alloy Steel Hollow Tube ( kg) x ($7.03 per kg) x (2 Trusses) = $17,418.08
Quenched & Tempered Steel Hollow Tube (85.9 kg) x ($7.95 per kg) x (2 Trusses) = $1,365.98
Connection Cost (C) (20 Joints) x (300.0 per joint) x (2 Trusses) = $12,000.00
Product Cost (P) x90x4 mm High-Strength Low-Alloy Steel Tube (%s per Product) = $1,000.00
x100x5 mm Carbon Steel Tube (%s per Product) = $1,000.00
x110 mm Carbon Steel Bar (%s per Product) = $1,000.00
x110x5 mm Carbon Steel Tube (%s per Product) = $1,000.00
x120x6 mm Carbon Steel Tube (%s per Product) = $1,000.00
x120 mm High-Strength Low-Alloy Steel Bar (%s per Product) = $1,000.00
x120x6 mm Quenched & Tempered Steel Tube (%s per Product) = $1,000.00
x140x7 mm Carbon Steel Tube (%s per Product) = $1,000.00
x150x7 mm Carbon Steel Tube (%s per Product) = $1,000.00
x160x8 mm Carbon Steel Tube (%s per Product) = $1,000.00
x160x8 mm High-Strength Low-Alloy Steel Tube (%s per Product) = $1,000.00
x170x8 mm Carbon Steel Tube (%s per Product) = $1,000.00
x180x9 mm Carbon Steel Tube (%s per Product) = $1,000.00
Site Cost (S) Deck Cost (10 4-meter panels) x ($4, per panel) = $48,500.00
Excavation Cost (18,000 cubic meters) x ($1.00 per cubic meter) = $18,000.00
Abutment Cost (2 standard abutments) x ($4, per abutment) = $8,000.00
Pier Cost (1 16-meter pier) = $15,500.00
Cable Anchorage Cost No anchorages = $0.00
Total Cost M + C + P + S $71, $12, $13, $90, = $186,274.29

5. Deck Truss South Fork Skykomish River Sunset Falls Bridge
Built in 1966 to recross the river and rejoin the original alignment to eliminate a long curved section of line. This is one of the 8 bridges built during the Index-East Gold Bar realignment
Design 12 panel Warren deck truss with deck plate girder approach spans
Location: Snohomish County, Washington

6. Warren Pony Truss Alexander Bridge
Built 1907; stone abutments date to 1897; bridge rehabilitated 1971; closed to vehicular traffic 2009, reopened with new truss structure December 2011
Design Original: Riveted Warren pony truss Replacement: Bolted Warren pony truss
Location: Catoosa County, Georgia

7. Whipple Deck Truss Dos Rios Bridge
Whipple (Double- Intersection Pratt) Deck truss bridge with pinned connections and Phoenix Columns. Rehabilitated with seismic retrofits. Retrofit, Link to seismic retrofit contractor
Design Whipple (Double-Intersection Pratt) Deck truss with pinned connections and Phoenix Columns.
Location: Mendocino County, California

8. Sources Deck Truss:http://bridgehunter.com/wa/snohomish/bh51966/
Warren Pony Truss:
Whipple Deck Truss: