The Network section provides links to many multi-modal network sets.
This content is read-only at this time and will be enable at a later time.
These networks can be filtered by mode using the tool below.
The NHPN is a 1:100,000 scale network database that contains line features representing just over 450,000 miles of current and planned highways in the US, consisting of interstates, principal arterials, and rural minor arterials, by State.
The ORNHN is a database of major highways in the US that is based on the NHPN, and is designed primarily to address vehicle routing and scheduling problems, but may be used in other studies that require an analytic or geographically-based national highway network. The database has been enhanced by the addition of more roads and attribute detail and adjusting topology to produce a true analytic network.
The Center for Transportation Analysis (CTA) Railroad Network contains every railroad route in the US, Canada, and Mexico that has been active since 1993. Geographic accuracy is generally 100 m on active lines. Supporting data on interlines and corporate ancestry allows the construction of routable networks for a specific target date. The network is an extension of the Federal Railroad Administration's strategic network.