Posted May 16, 2019, by Tim (springfieldbridges [at] gmail [dot] com)
it was so cold when pouring the concrete they feared it would freeze before curing. they used steam from an old boiler to run steam pipes thru to keep the concrete warm until it cured. I believe the small hut with the chimney in this photo would be the steam engine house. The concrete pour is nearly to the top in this photo.
BNSF - Big Rock Creek Bridge
Posted May 16, 2019, by Tim (springfieldbridges [at] gmail [dot] com)
more
BNSF - Big Rock Creek Bridge
Posted May 16, 2019, by Tim (springfieldbridges [at] gmail [dot] com)
original bridge was built in 1881
BNSF - Big Rock Creek Bridge
Posted May 16, 2019, by Tim (springfieldbridges [at] gmail [dot] com)
photo of falsework around old bridge
BNSF - Big Rock Creek Bridge
Posted May 16, 2019, by Tim (springfieldphotos [at] gmail [dot] com)
photo
BNSF - Big Rock Creek Bridge
Posted May 16, 2019, by Tim (springfieldbridges [at] gmail [dot] com)
elevation
BNSF - Big Rock Creek Bridge
Posted May 16, 2019, by Tim (springfieldbridges [at] gmail [dot] com)
photo from construction
BNSF - Big Rock Creek Bridge
Posted May 16, 2019, by Tim (springfieldbridges [at] gmail [dot] com)
built on top of another bridge!
BNSF - Big Rock Creek Bridge
Posted May 16, 2019, by tim (springfieldbridges [at] gmail [dot] com)
it was so cold when pouring the concrete they feared it would freeze before curing. they used steam from an old boiler to run steam pipes thru to keep the concrete warm until it cured. I believe the small hut with the chimney in this photo would be the steam engine house. The concrete pour is nearly to the top in this photo.