How are User Delay costs considered in LCCA process? UDC will not be included in C-factor Calculated for initial construction and each maintenance activity and brought to PW If 20% or greater difference including UDC, exception to AD/AB
What discount rate should be used in LCCA? 6, 4, 2%? 5 year rolling average of OMB Circular 94 (published annually)
Should Price Adjustment Clauses be used with alternate bidding? PACs have been used in PA for decades Proven benefit to owner and industry…
PACs (continued) Equates pavement types on a risk basis Change threshold for PACs from 10% to 20% and greater
How are Residual Life and Salvage Value considered in LCCA? Currently only residual life for concrete (5 years) Proposal to eliminate residual life and make treatment cycles come out equal to the evaluation period
How are maintenance treatment and cycles established? Historical performance data State preferences…
Established (continued) Proposed AC goes from 10 years to 15 years Concrete goes from 1 grind and 2 overlays to 2 grinds and 1 overlay
What about production rates and unit cost inputs? PennDOT and industry teams for both asphalt and concrete updated this data
Give the engineers/administrators latitude to make good decisions! LCCA just a tool!
Give credence to relative performance and motorists preference!