DENVER (CBS4)– The blizzard warning continues in the Denver metro area through 6 p.m. Wednesday which is making travel difficult. Several portions of Interstate 70 were closed both east and west of the metro area.

Pena Boulevard was closed in both directions both to and from Denver International Airport due to winter driving conditions.

DIA closed shortly after noon on Wednesday.

The Colorado Department of Transportation said all passenger vehicles must use chains, snow tires and 4-wheel drive on all interstates and some highways in the Denver metro area on Wednesday. That includes Interstate 25, I-70, C-470, I-225, Hwy. 83, I-270, I-76 and U.S. 285.

All commercial vehicles must chain up as well.

I-70 at US 6 (credit: Jamie Leary)

I-70 at US 6 (credit: Jamie Leary)

The blizzard warning brought heavy snow and strong winds to the Denver metro area early Wednesday morning and lasted throughout the day.

RTD had 10-15 minute delays for buses, light rail all day on Wednesday.

I-70 was closed in both directions from Airpark Road to the Kansas border. There was no estimate on when the interstate will reopen.

I-70 closed at Airpark Road east of Denver (credit: CBS)

I-70 closed at Airpark Road east of Denver (credit: CBS)

US 36 closed in both directions from Byers to Kansas border because of adverse weather.

I-25 is closed in both directions from CO 7 to CO 402, or Erie to Loveland, due to accidents and adverse weather.

BLIZZARD PHOTO GALLERY

I-70 closed for a large stretch from Morrison to Silverthorne due to adverse driving conditions.

U.S. 6 in Clear Creek Canyon closed from Golden to Hwy. 119 due to rock slide just before 8 a.m. Wednesday. The highway reopened at 10:45 a.m.

C-470 at U.S. 6 was closed for a while due to accidents. Traffic was getting by at 8 a.m. but there were delays in the area.