Lane closures on I-10 near Marsh Station interchange east of Tucson | News

The Arizona Department of Transportation will begin construction this week to improve a segment of I-10 approximately 15 miles west of Benson (mileposts 288-291).

On both November 28 & 29, from 7 p.m. to 6 a.m. the right lane of westbound I-10 will be closed for one mile just west of the Marsh Station traffic interchange (mileposts 289 to 290) for the placement of a concrete barrier.

Major features of the $17.2 million project include:

• Removal of the existing Pantano Union Pacific Railroad (UPRR) Bridge
• Construction of two new bridges at Cienega Creek
• Reconstruction and realignment of the westbound lanes of I-10
• Reconstruction of the eastbound lanes of I-10
• Widening the median

Other work will consist of Cienega Creek bank protection, the construction of a retaining wall, new drainage and safety features, plus salvaging and replanting the existing natural landscaping.

The road realignment will allow for the construction of a median that will enhance safety and lessen traffic impacts when the bridges are built. To ensure that the highway is not impacted by water flowing in Cienega Creek during heavy rains, the new bridges will be higher than the existing bridges.

By removing the Pantano Bridge, most commercial trucks will be able to travel on I-10 through the project area. The old bridge is too low for many of today’s taller trucks, which are currently required to take a 67-mile detour along state routes 83, 82 and 90.

ADOT advises drivers to proceed through or near work zones with caution, slow down, and be alert for construction equipment and personnel.