Interstate 10 remains closed about 45 miles west of the Arizona state line because of a Sunday bridge collapse, according to a media release from the Arizona Department of Transportation.

The Tex Wash Bridge on eastbound I-10 collapsed Sunday afternoon after heavy rain fell on the area near Desert Center, Calif. The westbound bridge remains standing but is closed while California Department of Transportation (CalTrans) engineers inspect that span to ensure it is safe for traffic.

ADOT is communicating regularly with CalTrans and the Federal Highway Administration to address issues related to the closure and ensure that drivers and others impacted by the closure have up-to-date information.

There is no estimate for when the freeway will reopen until inspections are complete. Approximately 24,000 vehicles cross the Arizona/California state line on I-10 each day, with commercial vehicles making up 31 percent of that traffic.

ADOT is using a variety of methods to inform drivers of the closure far in advance of the closure, including highway message boards, AZ511.gov, the 5-1-1 phone system and social media accounts on Facebook and Twitter.

CalTrans has established alternate routes while the freeway remains closed.

Westbound drivers are encouraged to exit I-10 at California 177, travel north to California 62 and go west to return to I-10 at Palm Springs.

Eastbound drivers are encouraged to exit I-10 at California 86, travel south to California 111 and continue south to I-8. At Yuma, drivers can take US 95 north to I-10 or continue east on I-8.

Arizona drivers may also consider using Interstate 8 or Interstate 40 to enter California. Drivers also can enter California 62 from Arizona State Route 95 in Parker.

Contact reporter Chuck Constantino at cconstantino@tucson.com or 954-0859. On Twitter: @CConstan3 or @azprepstar