Crawlerway facts for kids

Quick facts for kids
Crawlerway
U.S. National Register of Historic Places
Aerial view of Launch Complex 39. The Crawlerway is the pathway between the Vehicle Assembly Building and Pads 39A and 39B.
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Location	Brevard County, Florida  United States
Nearest city	Merritt Island
Built	1964
MPS	John F. Kennedy Space Center MPS
NRHP reference No.	99001641
Added to NRHP	January 21, 2000

The Crawlerway is a 130-foot-wide (40 m) double pathway at the Kennedy Space Center in Florida. It runs between the Vehicle Assembly Building and the two launch pads at Launch Complex 39. It has a length of 3.4 and 4.2 miles (5.5 and 6.8 km) to Pad 39A and Pad 39B, respectively. A seven-foot (2 m) bed of stones lies beneath a layer of asphalt and a surface made of Alabama river rocks.

The Crawlerway was originally designed to support the weight of the Saturn V rocket and its payload, plus the Launch Umbilical Tower and mobile launcher platform, atop a crawler-transporter during the Apollo program. It was also used from 1981 to 2011 to transport the lighter Space Shuttles to their launch pads.

Construction of the Crawlerway connected Merritt Island with the mainland, forming a peninsula. The main vehicle access road to and from the launch pads, the Saturn Causeway, runs alongside the Crawlerway.

Construction

The Crawlerway is composed of two 40-foot-wide (12 m) lanes, separated by a 50-foot (15 m) median. The top layer is Alabama river rock, 4 inches (10 cm) thick on the straight sections and 8 inches (20 cm) thick on curves. Alabama river rock was chosen for many properties, including hardness, roundness, sphericity and resistance to LA Abrasion. Beneath that is 4 feet (1.2 m) of graded, crushed stone, resting on two layers of fill. By 2013, a project to repair and upgrade the Crawlerway was undertaken, the first time since it was constructed that the foundation had been repaired. Additional rock was added to the surface in June 2014.

Gallery

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  Crawlerway under construction in December 1963

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  Apollo 14 rolls to Pad 39A in November 1970

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  The prototype Space Shuttle Enterprise begins its journey down the Crawlerway from Pad 39A to the VAB in July 1979 following a series of fit-checks

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  The Space Shuttle Atlantis is moved back to the VAB in January 2001 after the launch of STS-98 was scrubbed

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  Close up of Crawlerway in April 2005; originally smooth, the rocks have been crushed after many passages by the crawler-transporters