Estación Don-Nogales and bypasses With of length, Highway 15D's segment in Sonora, formerly known as Estación Don-Nogales, runs the length of the state of Sonora and includes access to most of the state's major population centers. It is maintained by
Caminos y Puentes Federales, which charges cars 340 pesos to travel the length of the road, including its four bypasses of
Nogales (),
Magdalena de Kino (, 25 pesos),
Guaymas (, 31 pesos) and,
Hermosillo (). Highway 15 is free between Nogales and Magdalena de Kino and from
Hermosillo to Guaymas, but between Guaymas and
Ciudad Obregón, and from Ciudad Obregón to
Los Mochis, Sinaloa, cars are tolled for intercity transit, and unlike with most of the country's toll roads (which are completely bypassed by non-toll highways), there are no non-toll alternatives to Highway 15D through much of Sonora. The road is currently being widened to four lanes throughout, a project scheduled to be completed by 2018; Additionally, bypasses are being constructed to avoid the route's two largest cities.
Libramiento de Ciudad Obregón In 2014, a concession was awarded to GIA+A and Invex Infraestructura to build a bypass of Ciudad Obregón, which circles around the city to the north and east. The first portion of the highway opened in October 2017. This bypass is operated by OCACSA, and cars pay 155 pesos to use it.
Libramiento de Hermosillo In 2015, a consortium of IDINSA, Constructora MAS and PRIMEX was selected to build a bypass of Hermosillo, with an expected completion date at the end of 2017. More recent estimates place completion in mid-2018. This is now open since May 9, 2019 although portions are 2 lanes. One toll booth is open (113 pesos). A second toll booth appears to be under construction. Southbound entry ramp not complete and requires travelling westbound on Blvd Morales (Bv Gustavo Mazon Lopez) and making a U-turn. ==Sinaloa: Culiacán to Mazatlán==