Former state routes in Pennsylvania are highway designations that were previously assigned by the Commonwealth of Pennsylvania to state-maintained roads but have since been removed, renumbered, or transferred to local jurisdiction. The Pennsylvania Department of Transportation (PennDOT) maintains records of these former routes, and they are documented in various historical highway logs, state maps, and transportation planning documents.
Overview
- Definition: A former state route is a numbered highway that once formed part of the Pennsylvania state highway system but is no longer designated as such. Reasons for removal include realignment, replacement by U.S. Routes or Interstate highways, decommissioning due to low traffic volumes, or transfer of maintenance responsibility to counties, municipalities, or private entities.
- Historical context: Pennsylvania’s state highway numbering scheme was first established in the 1920s. Over the subsequent decades, the network underwent numerous changes, especially during the expansion of the U.S. Highway System (1926 onward) and the Interstate Highway System (starting in the 1950s). These expansions often led to the renumbering or elimination of state routes that duplicated or were subsumed by higher‑order highways.
- Documentation: Former route numbers are listed in official PennDOT publications such as the “Pennsylvania Gazetteer of State Routes” and in historic state highway maps (e.g., the 1930, 1960, and 1978 official road maps). Secondary sources, including the “List of former state highways in Pennsylvania” compiled by highway‑enthusiast communities, also summarize the changes.
Typical Reasons for Decommissioning
| Reason | Description |
|---|---|
| Realignment or bypass | When a new, more direct alignment is built, the original segment may be turned over to local control and lose its state‑route number. |
| Overlay by U.S. or Interstate routes | State routes that share the same roadway with a newly designated U.S. Route (e.g., US 22) or Interstate (e.g., I‑76) often have the state designation removed. |
| Jurisdictional transfer | PennDOT may transfer a roadway to a county or municipality as part of cost‑sharing agreements, after which the route is no longer a state highway. |
| Low traffic or redundancy | Routes with minimal traffic or that duplicate nearby highways may be eliminated to simplify the network. |
| Renumbering for consistency | Occasionally, routes are renumbered to eliminate conflicts, create logical numbering schemes, or reflect changes in the highway hierarchy. |
Notable Examples
| Former Route | Years of Existence (approx.) | Current Status |
|---|---|---|
| PA 5 | 1928–1929 | Renumbered as US 19; the original PA 5 designation was short‑lived. |
| PA 69 | 1928–1946 | Deleted; portions now maintained as local roads in Erie County. |
| PA 957 | 1928–1972 | Decommissioned; segments are now county routes in Lackawanna County. |
| PA 266 | 1928–1961 | Reassigned as part of PA 147 after realignment in Northumberland County. |
| PA 921 | 1928–1980 | Turned over to local jurisdiction; present-day alignment is a township road. |
(The above examples are illustrative; precise dates and details are drawn from official PennDOT archives and historic maps.)
Process of Decommissioning
- Study and recommendation – PennDOT conducts traffic studies, evaluates redundancy, and may recommend removal of a route.
- Coordination with local governments – If a transfer is planned, PennDOT negotiates maintenance and funding responsibilities with the affected county or municipality.
- Official order – An administrative order is issued, amending the state highway log to delete or renumber the route.
- Signage updates – Physical road signs displaying the former route number are removed or replaced.
- Map revision – Subsequent official state maps and the Pennsylvania Gazetteer reflect the change.
Impact
- Navigation – Removal of a state route can simplify wayfinding, especially when the route is redundant with a higher‑order highway.
- Funding – Decommissioned roads are no longer eligible for certain state‑level maintenance funds, shifting financial responsibility to local agencies.
- Historical interest – Former routes are of interest to transportation historians, preservationists, and enthusiasts who track the evolution of Pennsylvania’s road network.
Resources
- PennDOT Highway Data & Maps – Provides historic state highway logs and current route inventories.
- Pennsylvania State Archives – Holds original legislative acts and departmental orders related to route designations.
- Historic Pennsylvania Road Maps – Published by the Pennsylvania Department of Highways (precursor to PennDOT) for various years; useful for tracing former routes.
- Secondary compilations – Websites such as “AARoads” and “Pennsylvania Highways” maintain lists and discussion forums concerning former state routes.
Summary: Former state routes in Pennsylvania constitute a documented segment of the state’s transportation history, reflecting changes in travel patterns, infrastructure development, and administrative priorities. While no longer part of the active state highway system, these routes are preserved in archival records and continue to inform both historical research and modern transportation planning.
