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HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
SUSPENSION TRAIL BRIDGE USING SUSTAINABLE MATERIALS
Rattlesnake Creek, Missoula, Montana, USABrad Miller PE [email protected]
SUSPENSION TRAIL BRIDGE USING SUSTAINABLE MATERIALS
Rattlesnake Creek, Missoula, Montana, USABrad Miller PE [email protected]
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
(Smallwood, or Roundwood, is 6 to 8 Inch Diameter Wood Made From Dead Lodge Pole Pine)
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
(Smallwood, or Roundwood, is 6 to 8 Inch Diameter Wood Made From Dead Lodge Pole Pine)
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
- A Second, Bridge Was Planned But Well Over Budget
(Smallwood, or Roundwood, is 6 to 8 Inch Diameter Wood Made From Dead Lodge Pole Pine)
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
- A Second, Bridge Was Planned But Well Over Budget
(Smallwood, or Roundwood, is 6 to 8 Inch Diameter Wood Made From Dead Lodge Pole Pine)
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
- A Second, Bridge Was Planned But Well Over Budget
- Considered 90-ft Cable Bridge, Also Prefab Steel Bridge
(Smallwood, or Roundwood, is 6 to 8 Inch Diameter Wood Made From Dead Lodge Pole Pine)
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
- A Second, Bridge Was Planned But Well Over Budget
- Considered 90-ft Cable Bridge, Also Prefab Steel Bridge
(Smallwood, or Roundwood, is 6 to 8 Inch Diameter Wood Made From Dead Lodge Pole Pine)
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
- A Second, Bridge Was Planned But Well Over Budget
- Considered 90-ft Cable Bridge, Also Prefab Steel Bridge
- Cable Bridge Chosen for Aesthetics, and to TakeAdvantage of Grant
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
- A Second, Bridge Was Planned But Well Over Budget
- Considered 90-ft Cable Bridge, Also Prefab Steel Bridge
- Cable Bridge Chosen for Aesthetics, and to TakeAdvantage of Grant
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
- A Second, Bridge Was Planned But Well Over Budget
- Considered 90-ft Cable Bridge, Also Prefab Steel Bridge
- Cable Bridge Chosen for Aesthetics, and to TakeAdvantage of Grant
- Many Agencies were involved in the Project
BACKGROUND- Initial Concept - Cable Stayed Bridge Using Smallwood
- A Second, Bridge Was Planned But Well Over Budget
- Considered 90-ft Cable Bridge, Also Prefab Steel Bridge
- Cable Bridge Chosen for Aesthetics, and to TakeAdvantage of Grant
- Many Agencies were involved in the Project
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
- Largely Going to Waste and Creating a Fire Hazard
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
- Largely Going to Waste and Creating a Fire Hazard
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
- Largely Going to Waste and Creating a Fire Hazard
- 6 to 8 Inch Diameter, Suitable for Intermediate Members
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
- Largely Going to Waste and Creating a Fire Hazard
- 6 to 8 Inch Diameter, Suitable for Intermediate Members
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
- Largely Going to Waste and Creating a Fire Hazard
- 6 to 8 Inch Diameter, Suitable for Intermediate Members
- 6 Inch Diameter Logs Stockpiled, From the Nez Perce NF
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
- Largely Going to Waste and Creating a Fire Hazard
- 6 to 8 Inch Diameter, Suitable for Intermediate Members
- 6 Inch Diameter Logs Stockpiled, From the Nez Perce NF
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
- Largely Going to Waste and Creating a Fire Hazard
- 6 to 8 Inch Diameter, Suitable for Intermediate Members
- 6 Inch Diameter Logs Stockpiled, From the Nez Perce NF
- Use This Sustainable Design Resource to Qualify for theGrant, and Help Minimize Fire Hazard
SMALLWOOD- Large Stands of Lodge-Pole Pine Killed by Beetles
- Largely Going to Waste and Creating a Fire Hazard
- 6 to 8 Inch Diameter, Suitable for Intermediate Members
- 6 Inch Diameter Logs Stockpiled, From the Nez Perce NF
- Use This Sustainable Design Resource to Qualify for theGrant, and Help Minimize Fire Hazard
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Cable Stayed Bridge Concept From Study by Others
DESIGN STRATEGY
- Cable Stayed Bridge Concept From Study by Others
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Cable Stayed Bridge Concept From Study by Others
- Second Bridge With Same Concept Well Over Budget
DESIGN STRATEGY
- Cable Stayed Bridge Concept From Study by Others
- Second Bridge With Same Concept Well Over Budget
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Cable Stayed Bridge Concept From Study by Others
- Second Bridge With Same Concept Well Over Budget
- Reduce Cost of Cable Stayed Concept or Revise Concept
DESIGN STRATEGY
- Cable Stayed Bridge Concept From Study by Others
- Second Bridge With Same Concept Well Over Budget
- Reduce Cost of Cable Stayed Concept or Revise Concept
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Cable Stayed Bridge Concept From Study by Others
- Second Bridge With Same Concept Well Over Budget
- Reduce Cost of Cable Stayed Concept or Revise Concept
- Use 6 inch Diameter Smallwood
DESIGN STRATEGY
- Cable Stayed Bridge Concept From Study by Others
- Second Bridge With Same Concept Well Over Budget
- Reduce Cost of Cable Stayed Concept or Revise Concept
- Use 6 inch Diameter Smallwood
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Simplify Concept - Ease of Construction & Maintenance
DESIGN STRATEGY
- Simplify Concept - Ease of Construction & Maintenance
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Simplify Concept - Ease of Construction & Maintenance
- Improve What Works, Avoid What Doesn’t Work
DESIGN STRATEGY
- Simplify Concept - Ease of Construction & Maintenance
- Improve What Works, Avoid What Doesn’t Work
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Simplify Concept - Ease of Construction & Maintenance
- Improve What Works, Avoid What Doesn’t Work
- Look at Other Trail Bridge Designs, US Forest Service
DESIGN STRATEGY
- Simplify Concept - Ease of Construction & Maintenance
- Improve What Works, Avoid What Doesn’t Work
- Look at Other Trail Bridge Designs, US Forest Service
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Simplify Concept - Ease of Construction & Maintenance
- Improve What Works, Avoid What Doesn’t Work
- Look at Other Trail Bridge Designs, US Forest Service
- Consider Aesthetics & Context Sensitive Design
DESIGN STRATEGY
- Simplify Concept - Ease of Construction & Maintenance
- Improve What Works, Avoid What Doesn’t Work
- Look at Other Trail Bridge Designs, US Forest Service
- Consider Aesthetics & Context Sensitive Design
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
US FOREST SERVICE TRAIL SUSPENSION BRIDGESUS FOREST SERVICE TRAIL SUSPENSION BRIDGES
Typical USFS Suspension Foot Bridge, Libby, MontanaTypical USFS Suspension Foot Bridge, Libby, Montana
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
US FOREST SERVICE TRAIL SUSPENSION BRIDGESUS FOREST SERVICE TRAIL SUSPENSION BRIDGES
Typical USFS Suspension Pack Bridge, Lochsa, MontanaTypical USFS Suspension Pack Bridge, Lochsa, Montana
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
US FOREST SERVICE TRAIL SUSPENSION BRIDGESUS FOREST SERVICE TRAIL SUSPENSION BRIDGES
-Lattice Stiffening TrussesUsing 6 Inch Boards
- Problems With Splices andConnections
- Towers Hard to Rehabilitate
- Many Have Lasted 75 Years!
-Lattice Stiffening TrussesUsing 6 Inch Boards
- Problems With Splices andConnections
- Towers Hard to Rehabilitate
- Many Have Lasted 75 Years!
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Use Lattice Stiffening Trusses From Half Rounds, FlatSides Toward Each Other
DESIGN STRATEGY
- Use Lattice Stiffening Trusses From Half Rounds, FlatSides Toward Each Other
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Use Lattice Stiffening Trusses From Half Rounds, FlatSides Toward Each Other
- Use Structural-Tees Top and Bottom as Connectors
DESIGN STRATEGY
- Use Lattice Stiffening Trusses From Half Rounds, FlatSides Toward Each Other
- Use Structural-Tees Top and Bottom as Connectors
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Use Lattice Stiffening Trusses From Half Rounds, FlatSides Toward Each Other
- Use Structural-Tees Top and Bottom as Connectors
- Eliminate Stringers For Simplicity and Savings, Use*Glued-Laminated Deck Over Floor-beams
DESIGN STRATEGY
- Use Lattice Stiffening Trusses From Half Rounds, FlatSides Toward Each Other
- Use Structural-Tees Top and Bottom as Connectors
- Eliminate Stringers For Simplicity and Savings, Use*Glued-Laminated Deck Over Floor-beams
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
- Use Lattice Stiffening Trusses From Half Rounds, FlatSides Toward Each Other
- Use Structural-Tees Top and Bottom as Connectors
- Eliminate Stringers For Simplicity and Savings, Use*Glued-Laminated Deck Over Floor-beams
*Changed to Composite Decking During Design
DESIGN STRATEGY
- Use Lattice Stiffening Trusses From Half Rounds, FlatSides Toward Each Other
- Use Structural-Tees Top and Bottom as Connectors
- Eliminate Stringers For Simplicity and Savings, Use*Glued-Laminated Deck Over Floor-beams
*Changed to Composite Decking During Design
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
DESIGN STRATEGY
Use 90-ft Suspension Bridge, Lattice Stiffening Truss
Instead of Cable Stayed, Round Log Truss
DESIGN STRATEGY
Use 90-ft Suspension Bridge, Lattice Stiffening Truss
Instead of Cable Stayed, Round Log Truss
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
Anchor BlockAnchor Block
ConcretePierConcretePier
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
Anchor BlockAnchor Block
Towers, Cables, and Hangers
Towers, Cables, and Hangers
Cable AttachmentCable Attachment
ConcretePierConcretePier
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
Transverse Floor BeamsTransverse Floor Beams
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
Transverse Floor BeamsTransverse Floor Beams Lattice Stiffening TrussLattice Stiffening Truss
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
Transverse Floor BeamsTransverse Floor Beams Lattice Stiffening TrussLattice Stiffening Truss
Timber Shear Plates and Split Ring Connectors
Timber Shear Plates and Split Ring Connectors
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
Lattice Truss DiagonalsLattice Truss Diagonals Top/Bottom ChordsTop/Bottom Chords
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
Lattice Truss DiagonalsLattice Truss Diagonals Top/Bottom ChordsTop/Bottom ChordsTreated With Copper Quinolinolate – K8Treated With Copper Quinolinolate – K8
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
4 x 12 Inch Composite Decking From Sawdust and Recycled Plastic4 x 12 Inch Composite Decking From Sawdust and Recycled Plastic
Plastic Fastening ClipsPlastic Fastening Clips
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
4 x 12 Inch Composite Decking From Sawdust and Recycled Plastic4 x 12 Inch Composite Decking From Sawdust and Recycled Plastic
Plastic Fastening ClipsPlastic Fastening Clips
Material Samples Available to Look atMaterial Samples Available to Look at
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
- Lateral Bracing - Plates and Cones as Climbing Deterrent- Lateral Bracing - Plates and Cones as Climbing Deterrent
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
Approach SlabApproach Slab Vinyl Coated Chain Link MeshVinyl Coated Chain Link Mesh
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
CONSTRUCTION SEQUENCECONSTRUCTION SEQUENCE
4’x8’ x 5/8 Inch Thick Rubber Mats From Recycled Tires4’x8’ x 5/8 Inch Thick Rubber Mats From Recycled Tires
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
COSTTotal Cost - $250,000$350 Per Square Foot
COSTTotal Cost - $250,000$350 Per Square Foot
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
Dedication CeremonyDedication Ceremony
April 21, 2006April 21, 2006
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
NATIONAL AWARDS- 2007 American Council of Engineering Companies (ACEC): Engineering Excellence Awards, Honor Award
- 2007 America Road and Transportation Builders (ARTBA ): Globe Award, 1st Place Bridge Category
- 2007 National Council of Structural Engineers Associations (NCSEA): Finalist Project Award, Second Place
- 2008 Association of Conservation Engineers (ACE): First Place Award of Excellence
NATIONAL AWARDS- 2007 American Council of Engineering Companies (ACEC): Engineering Excellence Awards, Honor Award
- 2007 America Road and Transportation Builders (ARTBA ): Globe Award, 1st Place Bridge Category
- 2007 National Council of Structural Engineers Associations (NCSEA): Finalist Project Award, Second Place
- 2008 Association of Conservation Engineers (ACE): First Place Award of Excellence
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
PRESENTATIONS- SMALLWOOD 2006 – Richmond, VA
- 2006 HDR Transportation Conference – Phoenix, AZ
- 86th Annual TRB Conference – Washington DC
- 2006 ACI Convention - Atlanta, GA
-2007 ACE Conference – Missoula, MT
- 2007 Western Bridge Engineers Seminar – Boise, ID
- 2008 17th Congress, International Association for Bridge and Structural Engineering – Chicago, Il
- SMALLWOOD 2010 – Hot Springs, AR
PRESENTATIONS- SMALLWOOD 2006 – Richmond, VA
- 2006 HDR Transportation Conference – Phoenix, AZ
- 86th Annual TRB Conference – Washington DC
- 2006 ACI Convention - Atlanta, GA
-2007 ACE Conference – Missoula, MT
- 2007 Western Bridge Engineers Seminar – Boise, ID
- 2008 17th Congress, International Association for Bridge and Structural Engineering – Chicago, Il
- SMALLWOOD 2010 – Hot Springs, AR
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
Rattlesnake Creek Pedestrian BridgeRattlesnake Creek Pedestrian Bridge
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
Rattlesnake Creek Pedestrian BridgeRattlesnake Creek Pedestrian Bridge
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
Rattlesnake Creek Pedestrian BridgeRattlesnake Creek Pedestrian Bridge
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
Rattlesnake Creek Pedestrian BridgeRattlesnake Creek Pedestrian Bridge
HDR ENGINEERING, INC. AN EMPLOYEE OWNED COMPANY
FOREST PRODUCTS SOCIETY - HOT SPRINGS, ARKANSAS APRIL 20-22, 2010
Thank You!! Questions?Thank You!! Questions?
