Denver International Airport - Design and Expandability

Design and Expandability

Denver has traditionally been home to one of the busier airports in the nation because of its location. Many airlines including United Airlines, Continental Airlines, Western Airlines, TWA, the old Frontier Airlines and People Express were hubbed in Denver and there was also a significant Southwest Airlines operation at the old Stapleton International Airport. At times, Denver was a hub for three or four airlines. Gate space was severely limited at Stapleton, and the runways at the old Stapleton were unable to deal efficiently with Denver's weather and wind patterns, causing nationwide travel disruption. These problems were the main justification for the new airport. The project began with Perez Architects and was completed by Fentress Bradburn Architects of Denver, Pouw & Associates of Arvada, CO, and Bertram A. Bruton & Associates of Denver of Denver. The signature DIA profile, suggestive of the snow capped Rocky Mountains, was first hand sketched by Design Director Curtis W. Fentress. Seized upon by then Mayor, Federico Peña, as the iconic form he was looking for – "similar to the Sydney Opera House" – DIA's design as well as its user-optimized curbside-to-airside navigation has won DIA global acclaim and propelled its designer, Fentress, to one of the foremost airport designers in the world. Fentress Architects is currently at work on the modernization of LAX. The concourses were designed by a joint venture of The Richardson Associates and The Allred Fisher Seracuse Lawler Partnership.

With the construction of DIA, Denver was determined to build an airport that could be easily expanded over the next 50 years to eliminate many of the problems that had plagued Stapleton International Airport. This was achieved by designing an easily expandable midfield terminal and concourses, creating one of the most efficient airfields in the world.

At 33,457 acres (13,540 ha), DIA is by far the largest land area commercial airport in the United States. Dallas/Fort Worth International Airport is a distant second at 18,100 acres (7,325 ha). The 327-foot (100 m) control tower is one of the tallest in North America. The airfield is arranged in a pinwheel formation around the midfield terminal and concourses. This layout allows independent flow of aircraft to and from each runway without any queuing or overlap with other runways, as well as allowing air traffic patterns to be adjusted to avoid crosswinds, regardless of wind direction. Additional runways can be added as needed, up to a maximum of 12 runways. Denver currently has four north/south runways (35/17 Left and Right; 34/16 Left and Right) and two east/west runways (7/25 and 8/26).

DIA's sixth runway (16R/34L) is the longest commercial precision-instrument runway in North America with a length of 16,000 feet (4,877 m). Compared to other DIA runways, the extra 4,000-foot (1,200 m) length allows fully loaded jumbo jets such as the Boeing 747 or Airbus 380 to take off in Denver's mile-high altitude during summer months, thereby providing unrestricted global access for any airline using DIA.

The midfield concourses allow passengers to be screened in a central location efficiently and then transported via a rail system to three different passenger concourses. Unlike Hartsfield-Jackson Atlanta International Airport upon which the midfield design was based, Concourses B and C are not connected by any kind of walkway; they are only accessible via train.

The taxiways at Denver have been positioned so that each of the midfield concourses can expand significantly before reaching the taxiways. Concourse B, which is primarily used by United Airlines, is longer than the other two concourses, but all three concourses can be expanded as needed. Once this expansion is exhausted, space has been reserved for future Concourses D and E.

All international flights requiring customs and immigration services currently fly into Concourse A. Currently eight gates are used for international flights. These north facing gates on Concourse A are equipped to divert incoming passengers to a hallway which connects to the upper level of the air bridge, and enters Customs and Immigration in the north side of the Jeppesen Terminal. These gates could also be easily modified to allow boarding on both the upper deck and the lower deck of larger planes such as the Airbus A380.

As part of the original design of the airport the city specified passenger volume "triggers" that would lead to a redevelopment of the master plan and possible new construction to make sure the airport is able to meet Denver's needs. The city hit its first-phase capacity threshold in 2008, and DIA is currently revising the master plan. As part of the master plan update, the airport announced selection of Parson's transportation group to design a new hotel, rail station and two bridges leading into the main terminal. Santiago Calatrava has been selected as the architect for the project. In addition, before hitting the 60 million passenger volume trigger, the airport is planning on constructing an additional runway, 20+ new gates on the existing concourses, two additional International Gates as well as improvements to the baggage system and passenger train.

Once fully built out, DIA should be able to handle 110 million passengers per year, up from 32 million at its opening.