A major interstate closure between Tucson and Benson overnight on March 8 will force drivers to alter travel plans or prepare for a 67-mile detour, according to the Arizona Department of Transportation.
Approximately 30 miles east of downtown Tucson, Interstate 10 will be closed in both directions from 9 p.m. March 8 until 6 a.m. March 9 for the removal of the old Pantano Union Pacific Railroad Bridge.
During the demolition, motorists will be guided by signs through a 67-mile detour around the I-10 closure, which is between State Route 83 east of Tucson (Exit 281) and SR 90 west of Benson (Exit 302). Drivers can expect up to two hours of additional travel time. ADOT strongly advises avoiding this segment of I-10 during the closure.
By removing the Pantano Union Pacific Railroad Bridge, most commercial trucks will be able to travel on I-10 through the project area. The existing bridge is too low for many of today’s taller trucks, which are currently required to take a detour using state routes 83, 82 and 90.
In order to prepare for the bridge removal later that night, from 7 a.m. to 9 p.m. on March 8, there will be lane closures on eastbound and westbound I-10 in the area of the Union Pacific Railroad Bridge. The speed limit will be reduced and one lane will remain open in each direction.
Detour for eastbound I-10
Eastbound I-10 traffic will detour to SR 83 (Exit 281), travel south to SR 82 in Sonoita, turn left (east) on SR 82 to the SR 90 intersection, turn left (west) onto SR 90 and follow signs to reconnect with I-10 near Benson (Exit 302).
Detour for westbound I-10
Westbound I-10 traffic will detour from the interstate at SR 90 (Exit 302), travel east to the SR 82 intersection, turn right (west) on SR 82 and travel to SR 83 in Sonoita, turn right (north) on SR 83 to reconnect with I-10 at Exit 281.
For those traveling that night, note the following 24-hour fuel station locations:
- I-10 and SR 90 junction
- SR 90 and SR 82 junction
- Colossal Cave Road/Wentworth Road (Exit 279) (Note: This is the last gas station on eastbound I-10 before the detour onto SR 83.)
- SR 82 and SR 83 junction (Note: A store with fuel pumps is located in this area; the store will be closed, but the fuel pumps are available 24 hours for credit card purchases.)
For more information regarding this project or local access, contact 1.855.712.8530 or www.azdot.gov/i10marshstation.