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Johnstown Inclined Plane Bridge


Johnstown Inclined Plane Bridge

Viewed from the southeast

(c) 2008 by Michael Minn

BH Photo #128968

Street View 


"The Johnstown Incline Plane is both a major tourist attraction and an important public transportation service. People living in Westmont Borough at the top of the hill have short walk to work downtown via the incline plane. It avoids a several mile drive on roads cut into the mountain. The Incline Plane is the steepest vehicular Incline Plane in the world. The Incline plane regularily carries cars up and down the hillside. There is a restaurant, interpretation center with a large map of the area and an observation deck on top. The pedestrian bridge over route 56 (4 lane) was built in 1994 by the Cambria County Transit Authority to make it easier for commuters to get into downtown via the Incline Plane. The Incline Plane was condemned as unsafe for public use in the late 1970's. At that time it was owned by the Borough of Westmont. The Borough sold it to the Cambria County Transit Authority. It was later rebuilt from the ground up with a US Department of Transportation Grant." SOURCE: http://webpages.charter.net/gdsbmmllp/city/town.htm

This single-span, pin-connected Pennsylvania through truss bridge was constructed across the Stonycreek River in conjunction with an inclined plane railway shortly after the Johnstown Flood of 1899. Both the bridge and the inclined plane were built to provide a means for escaping future floods and to encourage the development of, and settlement in, the Cambria Iron Company- owned hilltop town of Westmont. The bridge roadway was partially reconstructed in 1962, but most of the span retains its original members. The Inclined Plane Bridge was listed in the National Register of Historic Places in 1988. - HAER


Through truss bridge on LR 525 spur over Stoney Creek in Johnstown
Johnstown, Cambria County, Pennsylvania
Open to traffic
Built 1890; rehabilitated 1965
- Bethlehem Steel Co. of Bethlehem, Pennsylvania
Pennsylvania (Petit) through truss
Total length: 236.9 ft.
Deck width: 24.5 ft.
Posted to the National Register of Historic Places on June 22, 1988
Also called
Johnstown Inclined Railway
Westmount Inclined Plane
Approximate latitude, longitude
+40.32667, -78.92667   (decimal degrees)
40°19'36" N, 78°55'36" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/676139/4466077 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2015)
Inventory numbers
PA 11 3022 0010 0000 (Pennsylvania Bridge Management System number)
NRHP 88000805 (National Register of Historic Places reference number)
PANBI 08636 (Pennsylvania BRKEY bridge number on the 2011 NBI)
BH 30599 (Bridgehunter.com ID)
Inspection report (as of July 2018)
Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 44 (out of 100)
View more at BridgeReports.com

Update Log 

  • July 19, 2021: New photo from Dave King
  • June 1, 2017: New photos from Brian Manville
  • January 12, 2015: HAER photos posted by Dave King
  • July 3, 2013: Photo imported by Dave King
  • August 20, 2011: Updated by Jodi Christman: Edited type, builder and added description
  • August 1, 2011: New photos from Jodi Christman
  • January 9, 2011: New Street View added by Jodi Christman
  • November 8, 2010: New photos from Brian McKee
  • December 2, 2008: New photos from Michael Minn