A white paper by TDOT in preparation of a new Draft Environmental Impact Statement (DEIS) alternative considers tunnelling as opposed to alternatives previously examined that concern surface road options with, in some cases, short sections of tunnel.
TDOT said it now wishes to consider options that include tunnelling and add an approximately 6-mile-long (9.65km) tunnel alternative to the project’s DEIS.
The tunnel would extend 20,860ft (6,358m), then emerge to cross a creek on a 500ft (152m) bridge, and re-enter a second tunnel for 8,940 feet (2,725m).
