Texas Historic Bridge Projects 1886 - Pilot Grove Bridge Grayson County Jamie F. Farris, P.E. TxDOT Bridge Division
Texas Historical Bridges Background Info Historic Designations Common Types Restoration Options Rehabilitation Current and Future Projects
The Beginning First roads dirt trails, rough terrain First bridges crude, often built with timber Travel by horses and wagons Designs based on weight of livestock and wagons Photos from http://en.wikipedia.org
Introducing The Automobile 1900 Mass production in France & U.S. 1905-1918 Rapid auto technology 1908-1927 Ford Model T rapidly produced Photos from http://en.wikipedia.org
Historic Designations Bridges can be recorded as: National Register of Historic places Recorded Texas Historic Landmark
Common Types of Historic Bridges Regency Bridge, Mills Co. Photo by TxDOT SUSPENSION
Common Types of Historic Bridges TRUSS Brushy Creek Williamson Co.
Early Truss Bridge Building Loop 481 @ S. Llano River Junction, TX
Three Categories of Trusses
Three Categories of Trusses THROUGH TRUSS Photo by C. Walker 1911 Waldrip Bridge - Coleman County
Three Categories of Trusses PONY TRUSS Photo by C. Walker 1886 CR 120 Seguin Branch Bridge - Wilson County
Three Categories of Trusses DECK TRUSS Photo by A. Bettis 1957 Pecos River Bridge - Val Verde County
Most Common Configurations
Most Common Configurations Pratt Truss Warren Truss
Bridge Restoration Options Rehab for vehicular traffic Rehab for nonvehicular use (pedestrian) Bypass Leave as Monument Photo by C. Walker 1936 Llano River Bridge - Llano County
Bridge Restoration Options Rehab for vehicular traffic Rehab for nonvehicular use (pedestrian) Bypass Leave as Monument Photo by C. Walker
Bridge Restoration Options Rehab for vehicular traffic Rehab for nonvehicular use (pedestrian) Bypass- Leave as Monument Atlanta District Photo by C. Walker
Bridge Restoration Options Bypass Leave as Monument
Bridge Restoration Options Bypass Leave as Monument
Rehabilitation Key Historical Guidelines Minimal alteration of structure Character of structure intact Distinctive stylistic features Repair not Replace Protect archeological resources
Rehab for Pedestrian Use
Step 1: Assemble Information Existing Plans Condition Survey Load Rating Bridge Inspection Report Old Pictures
Step 1: Assemble Information Existing Plans Condition Survey Load Rating Bridge Inspection Report DON T COUNT ON IT Old Pictures
Step 1: Assemble Information Existing Plans Condition Survey Load Rating Bridge Inspection Report Old Pictures
Step 1: Assemble Information Existing Plans Condition Survey Load Rating Bridge Inspection Report Old Pictures
Step 2: Site Visit
Step 2: Site Visit Step 2: Site Visit Equipment Tape Measure Ladder Calipers Camera Small Shovel Gloves Clip Board
2: Site Visit Bearings
2: Site Visit Bearings
2: Site Visit Bearings
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 2: Site Visit Step 2: Site Visit Pictures Type of Truss Members replaced? Sketches Measure
Step 3: Lifting & Relocation
Step 3: Lifting & Relocation How will the bridge be lifted?
Step 3: Lifting & Relocation How will the bridge be lifted? Strength of Members
Steel Truss Material Properties Yield Strength Prior to 1905 26.0 KSI 1905 1936 30.0 KSI 1937 1963 33.0 KSI After 1963 36.0 KSI Printed in 1931
Step 3: Lifting & Relocation How will the bridge be lifted? Strength of Members Rigging Equipment
Step 3: Lifting and Relocation How will the bridge be lifted? Strength of Members Rigging Equipment Proposed Site / Transportation
Step 4: Plans Guidelines / Specifications Special Specs : Remove and Relocate Existing Bridge Glue Laminated Deck Historical Marker For Examples: www.dot.state.tx.us/business/specifications.htm
Step 4: Plans Guidelines / Specifications Plan Sheets Bridge Layout Estimated Quantities Lifting and Relocating Abutment / Foundation Rehabilitation Re-decking Pedestrian Rail Historical Marker (Optional)
BRIDGE LAYOUT
ESTIMATED QUANTITIES
TRUSS RELOCATION DETAILS
ABUTMENT DETAILS
REHABILITATION DETAILS
REDECKING DETAILS
PEDESTRIAN RAIL
HISTORICAL MARKER
HISTORICAL MARKER
TxDOT Bridge Division Rehabilitation Projects
Llano River Bridge Built 1936 SH 16 Llano County CSJ 0290-01-036 4-200 Parker Truss Spans
Beveridge Bridge Built 1896 CR 200 - San Saba County CSJ 0923-25-018 Suspension Bridge
Photo by John Beveridge
Photo by: John Beveridge
Jim Ned Creek Bridge Built Early 1900 s CR 140 - Coleman County CSJ 0923-08-016 101 Warren & 81 Half-Hip Truss Spans
Jimmy s Creek Bridge Built 1907 (Approx.) Comanche County CSJ 0923-17-029 50 Span Pony Truss
Leon River Bridge Built Early 1900 s Hamilton County CSJ 0909-29-034 84 Bowstring Truss
Photo By: C. Walker
Washington Avenue Bridge Built 1901 McLennan County CSJ 0909-22-141 Parker Truss
Thank You: Charles Walker Mike Hyzak Yuan Zhao Jamie Griffin Dacio Marin David Hohmann
References: 1. AASHTO Manual for Condition Evaluation of Bridges 1994 2. The Evolution of the Metal Truss Bridges in America, by Mary McCahon 3. http://en.wikipedia.org 4. History of Strength and Materials, Stephen P. Timosshenko 5. Texas Historical Commission, www.thc.state.tx.us 6. The Historic Bridge Foundation, www.historicbridgefoundation.com 7. www.historicbridges.org 8. Introduction to Historic Truss Bridges, Nathan Holth
Questions? Jamie F. Farris, P.E. jfarris@dot.state.tx.us 512-416-2567