The proposed Gusa-Puerto (Interior) By-pass Road Project will reportedly have a tunnel. If the plan pushes thru, this will be the first road tunnel in Cagayan de Oro City.
As shown in the bid document taken from DPWH website, Phase 1 of the project worth P200 million is already up for bidding. LINK
In April early this year, DPWH had solicited consultancy services for the proposed tunnel section of the road project. Screenshot below. LINK