Lunch. Bryan District Average Construction Cost Grade Separation –$ 10 Million 2 Lane to 4 Lane...
-
date post
20-Dec-2015 -
Category
Documents
-
view
216 -
download
0
Transcript of Lunch. Bryan District Average Construction Cost Grade Separation –$ 10 Million 2 Lane to 4 Lane...
Lunch
Bryan District Average Construction Cost
• Grade Separation– $ 10 Million
• 2 Lane to 4 Lane– $ 2.3 Million/ Mile
• 2 Lane to Super 2 (passing zones)– $ 1 Million/ Mile
• Signal– $ 100,000
• Freeway – Controlled Access– $ 10 Million/ Mile
Programming - Strategies
• Gather data from similar projects– Cost/ mile equivalents
• Original plans• TxDOT’s – Roadway Design Manual• “Green Book” (Policy on Geometric Design of Highways
and Streets• TxDOT’s – Bridge Design Manual• Site visit
– note existing structures– consider topography
• Bid tabs and Estimator
General Estimate
– Prepare ROW (Item 100)– Pavement– Structures
• Bridges• Culverts/ Inlets/ Storm sewer
– Items 462 through 466
• Retaining walls– Item 423
– Embankment/ Excavation (Item 132/110)– Signals– Contingency (15-20% subtotal 1)– Mobilization (10% subtotal 2)
Items• ftp://ftp.dot.state.tx.us/pub/txdot-info/des/sp
ecs/specbook.pdf (2004 Spec Book)
• http://www.dot.state.tx.us/business/avgd.htm (state wide and region specific)
• http://www.dot.state.tx.us/insdtdot/geodist/bry/cserve/bidprice/s_0101.htm (Bryan District Low Bid)
Pavement
• Main lane– $90/ SY (Flexible)
• Frontage/ Ramps– $65/ SY (Flexible)
• Urban Arterial– $80/ SY (Rigid)
Structures(400 Items)
• Culverts (Item 462)
• Reinforced Concrete Pipe (Item 464)
• Inlets/ Manholes (Item 465)
• Headwalls/ Wingwall (Item 466)
• Safety End Treatment (Item 467)
• Retaining Walls (Item 423)
Estimating Bridge Type
http://www.txdot.gov/business/contractors_consultants/bridge/super_design.htm
Bridge Design Manual Chapters 4 & 5
Bryan District Tx Girder Structure = $75/(sq. ft)
Bryan District AverageTx Girder = 75/$SF
Estimator supports generation of cost estimates using cost-based and bid-based techniques. Regional
information
Accounts for quantity
• http://www.dot.state.tx.us/business/projects/estimator.htm
Wow! what a great program… but where can I get a copy?
Construction Cost = $ 5.9 Million
Construction Bid = $ 20 Million
Estimate = $23.3 Million