This image depicts a cross-section of CDOT’s planned highway expansion, which could lead to disastrous results as described below.
The March 1, 2014 instantaneous 103-vehicle wreckage and death in the I-25/T-Rex depression below Washington Street was shocking. The Denver Post described a situation that eventually will happen innumerable times along CDOT’s proposed I-70 1.75 mile “cut and kill trench.”
Here are more extremes:
- Identical 330′ paving width basic layout 0.8 miles long at I-25.
- Two rail lines modified into driving lanes creates the same subterranean profile – I-70 is deeper with an 800′ underpass cover. I-25 gravity drains, but I-70 falls to one 40′ deep tunnel.
- I-25 diagonals sunrays and I-70 perpendiculars, so its maximum 56′ tall snow shadow footprint modifies microclimates six months yearly
- The I-70 Venturi Effect becomes severe, matching high velocity west winds with old Stapleton tunnel conditions, including required 5% gradients
- Rush hour drivers face staccato direct/indirect instant light blindness under bridges and covers
- Wind chills coupled with typical Denver 140 annual freeze/thaws exacerbate expansion and contraction impacts in a moat subject to powerful below surface water seepage pressures plus -25 to +105 degree temperatures.
- De–icing barely mitigates lesser wintertime climate occurrences. Consequently, these elements continuously generate “death crashes” waiting to happen!