This is a multi-phased project which entailed the full depth reconstruction of Taxiway G and
Terminal connectors.
Phase III of this project included full depth reconstruction of the existing PCC Pavement
structure at Taxiway G from Taxiway P through Taxiway C. The work included new Taxiway Edge
Lights, new underground cabling and conduit, new illuminated location and guidance Signs,
install of a sub-drainage system, pavement markings and bituminous paved shoulders. The
project also included geometric changes at Taxiway intersections to comply with current FAA
Design standards.
Project Description – Financial
This project cost $10,868,413 of which $9,803,475 was funded with Airport Improvement
Program (AIP) funds, $250,000 was funded with Colorado Department of Transportation
Division of Aeronautics (CDOT) funds and $814,938 will be funded with PFCs ($776,132 through
Pay-Go and $38,807 through debt financing).
Project Justification
Taxiway G between Taxiway P through Taxiway C was originally constructed in 1992 and has not
had any major rehabilitation or reconstruction work completed since original construction.
Based on the June 2015 pavement management field inspection and subsequent report
prepared by the Colorado Department of Transportation, Division of Aeronautics, an overall
Pavement Condition Index (PCI) of 61 was assigned to the section of Taxiway G between TW P
through TW C. PCI values are assigned for pavement management on a 1-100 scale, with ranges
that identify maintenance, major rehabilitation and replacement. PCI assigned values of 41-55
indicate need for major rehabilitation / reconstruction. PCI values below 41 indicate need for
pavement reconstruction.
Taxiway G supports both primary runways for commercial, military and general aviation flights.
Over the past several years, the Taxiway G concrete pavement deterioration has become
increasingly problematic. A variety of pavement distresses have been identified that include
joint failures, moderate to severe corner spalls and longitudinal map cracking due to material
related distresses attributed to Alkali Silica Reactivity (ASR) and Disintegration cracking from
freeze thaw susceptible aggregate materials.
ASR is a chemical reaction between aggregate (course and fine) and the cement. It causes a gel-
like substance to form that weakens the structure of the pavement, ultimately causing failure
and creates Foreign Object Debris (FOD) that requires significant repairs and frequent
maintenance to maintain a safe operating pavement structure. Not all aggregates and sands are
reactive. ASR accelerates the deterioration of the pavement surfaces.
The rehabilitation project was proposed in order to provide a safe surface for continued Aircraft
Operations on Taxiway G.
Project Objective
The objective behind the full depth reconstruction of the portion of Taxiway G as described in
this phase is to preserve the safety of passenger carriers and other aircraft utilizing the Airport’s
primary taxiway system (TWY’s E, G and H) by replacing ASR-affected pavement with new
Portland Cement Concrete Pavement (PCCP).