The incline's original steam engine was disconnected on January 6, 1912, and replaced with an electric motor.
The cars used on the incline were originally double-deckers, but were reconfigured into a single-decker design in 1921.
The double-decker cars had horses and wagons riding on the main, upper deck and passengers riding in a compartment below.
Only one human fatality has occurred at the incline; it was determined that the incident was not caused by the incline itself.
There were two incidents in the 1920s when horses aboard the incline became spooked and leapt from the car onto the tracks.
Bethlehem Steel, the successor to Cambria Iron, sold the Johnstown Inclined Plane to the borough of Westmont in April 1935.
On March 17, 1936, nearly 4,000 people were evacuated from Johnstown to higher ground via the incline as the Stoneycreek and Conemaugh Rivers overflowed their banks.
The floodwaters continued downstream and eventually reached Pittsburgh.
From February 1938 to July 1953, the Johnstown Traction Company operated transit buses from Johnstown to Westmont with the "fully loaded public buses" being carried by the incline.
Bethlehem Steel stopped supplying electricity to the Johnstown Inclined Plane when the factory switched to "an incompatible power system", forcing the incline to close on January 31, 1962.
Because of public pressure to keep the incline operating, it was reopened in July 1962 after extensive renovation, in which the electric motor was rewound, ties were replaced, and the cars were repainted.

The Johnstown Inclined Plane was listed on the National Register of Historic Places on June 18, 1973.
On July 20, 1977, the incline was again used as an escape route, evacuating residents from the valley amid rising floodwaters.
It also carried "boats, emergency personnel, and equipment down to the valley to aid in rescue operations".
The incline was again sold for $1 by Westmont borough on March 8, 1983, to the Cambria County Transit Authority, now CamTran.
CamTran initiated a $4.2 million renovation on September 7, 1983, replacing "the incline's foundation piers, structural steel, and track."
The renovations were completed on August 22, 1984, and the incline was rededicated on September 6.
It was designated an Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers (ASME) in September 1994.
A footbridge spanning Pennsylvania Route 56 between the incline and Vine Street was opened around the same time.
On September 1, 2000, the incline was closed when the Pennsylvania Department of Transportation (PennDOT) undertook an $2.3 million renovation of the bridge and its access road.
It was reopened in April 2001, but again closed in September to allow PennDOT to finish repairs to the bridge deck.
The repairs were completed on December 14, 2001.
A strong thunderstorm disrupted power to the incline on April 16, 2010, stranding the cars and two passengers almost halfway down the slope.
The rescue took three hours, and ended when firefighters rappelled down the tracks to reach the car.
The Johnstown Inclined Plane was closed from September 9 to October 14, 2010, for the installation of a new 9,000-pound (4,100 kg) "hoist brake shaft."
From October 29 to October 31, 2012, CamTran shut down the incline fearing power outages due to the passage of Hurricane Sandy.
During the annual Thunder in the Valley motorcycle rally, two resistors failed and stopped the incline near the stations on June 28, 2014.
Repairs took approximately a month after consultants diagnosed the failure.
Sensor issues briefly disrupted service in August 2014 and, again, December 2014 forcing the incline to start its winter maintenance period early.
The incline's original steam engine was disconnected on January 6, 1912, and replaced with an electric motor. The cars used on the incline were originally double-deckers, but were reconfigured into a single-decker design in 1921. The double-decker cars had horses and wagons riding on the main, upper deck and passengers riding in a compartment below. Only one human fatality has occurred at the incline; it was determined that the incident was not caused by the incline itself. There were two incidents in the 1920s when horses aboard the incline became spooked and leapt from the car onto the tracks. Bethlehem Steel, the successor to Cambria Iron, sold the Johnstown Inclined Plane to the borough of Westmont in April 1935. On March 17, 1936, nearly 4,000 people were evacuated from Johnstown to higher ground via the incline as the Stoneycreek and Conemaugh Rivers overflowed their banks. The floodwaters continued downstream and eventually reached Pittsburgh. From February 1938 to July 1953, the Johnstown Traction Company operated transit buses from Johnstown to Westmont with the "fully loaded public buses" being carried by the incline. Bethlehem Steel stopped supplying electricity to the Johnstown Inclined Plane when the factory switched to "an incompatible power system", forcing the incline to close on January 31, 1962. Because of public pressure to keep the incline operating, it was reopened in July 1962 after extensive renovation, in which the electric motor was rewound, ties were replaced, and the cars were repainted.
The Johnstown Inclined Plane was listed on the National Register of Historic Places on June 18, 1973. On July 20, 1977, the incline was again used as an escape route, evacuating residents from the valley amid rising floodwaters. It also carried "boats, emergency personnel, and equipment down to the valley to aid in rescue operations". The incline was again sold for $1 by Westmont borough on March 8, 1983, to the Cambria County Transit Authority, now CamTran. CamTran initiated a $4.2 million renovation on September 7, 1983, replacing "the incline's foundation piers, structural steel, and track." The renovations were completed on August 22, 1984, and the incline was rededicated on September 6. It was designated an Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers (ASME) in September 1994. A footbridge spanning Pennsylvania Route 56 between the incline and Vine Street was opened around the same time. On September 1, 2000, the incline was closed when the Pennsylvania Department of Transportation (PennDOT) undertook an $2.3 million renovation of the bridge and its access road. It was reopened in April 2001, but again closed in September to allow PennDOT to finish repairs to the bridge deck. The repairs were completed on December 14, 2001. A strong thunderstorm disrupted power to the incline on April 16, 2010, stranding the cars and two passengers almost halfway down the slope. The rescue took three hours, and ended when firefighters rappelled down the tracks to reach the car. The Johnstown Inclined Plane was closed from September 9 to October 14, 2010, for the installation of a new 9,000-pound (4,100 kg) "hoist brake shaft." From October 29 to October 31, 2012, CamTran shut down the incline fearing power outages due to the passage of Hurricane Sandy. During the annual Thunder in the Valley motorcycle rally, two resistors failed and stopped the incline near the stations on June 28, 2014. Repairs took approximately a month after consultants diagnosed the failure. Sensor issues briefly disrupted service in August 2014 and, again, December 2014 forcing the incline to start its winter maintenance period early.
Johnstown Inclined Plane