2014 CONSTRUCTION ESTIMATES 2014

Estimates 2

2014 Estimates 3 Point of the illustration? Document your assumptions.

2014 Estimate Types  Programming – The project is in the concept phase. No schematic and little details are known.  Schematic – Known Geometrics (alignments V & H, super-elevations, typical sections), field survey, environmental constraints, traffic loading, bridge span length, retaining wall, etc. – Unknowns Final pavement design, phases of construction, detours, utility conflicts, final quantities  Final Plans – All quantities are known, the unknown unknown is the only unknown – Required to be within 3% of the lowest bid (or write a justification)  Contractors Estimate – Estimate based on the individual (contractor’s unique position) 4

2014 Bryan District Average Cost  Grade Separation  2 Lane to 4 Lane  2 Lane to Super 2 (passing zones)  Signal  Ramps  Freeway – Controlled Access 5  $ 10 Million  $ 2.3 Million/ Mile  $ 1 Million/ Mile  $ 150,000  $ 450,000/ EA  $ 12 Million/ Mile

2014 Programming  Basic estimate (Programming to preliminary Schematic) – Structures (bridges, culverts, storm drains) – Pavement $/ mi (spread sheet) – Signals ~ $ 150k/ EA – Miscellaneous (erosion control, striping, signs, traffic control, etc.) 10 – 20 % of known (subtotal 1) – Engineering Contingencies 6 – 11 % subtotal 2 – Mobilization 10 % subtotal 3 6

2014 Structures  Structures (400) – 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)  Average bid for items – Go to search “low bid” – Or services/bidding/average-low-bid-unit-prices.htmlhttp:// services/bidding/average-low-bid-unit-prices.html 7

2014 Structures  Superstructure (beam type) – design.html design.html  Unit cost found here –  General programming estimate (for most structures, if specialized design use the links above for more information) – Bridge Cost = $ 75/ sf deck – includes all structure cost substructure and superstructure – Culvert Cost = low bid cost x length x 1.4 – 1.4 factor adjust for head wall, wing wall, special trenching, junctions etc. – Embankment = $ 10/ cy – Excavation = $ 3/ cy – Wall = $ 50/ sf 8

2014 All items  100 – Earth Work and Landscape  200 – Subgrade Treatments and Base  300 – Surface Courses and Pavement  400- Structures  500- Miscellaneous Construction  600 – Lighting, Signing, Markings, and Signals  700 – Maintenance Spec Book 9

2014 Pavement cost / mi  See estimate spreadsheet (2014_est.xls) 10

2014 Further considerations  Considerations when Estimating Bridge Projects 1.Is stage construction necessary? 2.Is the replacement bridge on new alignment or the same? 3.Will the replacement bridge have longer spans with deeper beams? If so, will the grade have to be raised for clearance (hydraulics or V.C.)? 4.Will the contractor need special equipment for the project? 5.Is a shoofly structure required for a railroad underpass? 6.Will a pump station be required? 7.Is there a shortage of materials (steel)? 8.Is a relief structure also necessary? 11

2014 Local Projects 12

2014 Local Projects 13 Construction = $ 5.9Million

2014 Local Projects 14

2014 Local Projects 15 Construction = $ 23.5 M

2014 Local Projects 16

2014 Local Projects 17 Construction = $ ?? M

2014 Local Projects 18