The park is open all year, though certain roads and facilities are closed during the winter months. Dinosaur fossils can only be seen on the Utah side of the park.

Quarry Visitor Center
Open daily, 9:00 a.m. - 5:00 p.m.
Except, closed on Thanksgiving, Christmas (December 25), and (New Year's Day January 1).

Quarry Exhibit Hall 
Open daily, 9:30 a.m. - 4:45 p.m. (last trip up to the fossils is at 4:00 p.m.)
Also closed on Thanksgiving, Christmas (December 25), and (New Year's Day January 1).

How to Access the Quarry
From October 31, 2011 through March 31, 2012
First, stop at the Quarry Visitor Center. Rangers lead car caravans up to the Quarry Exhibit Hall at the following times:
9:30 a.m.
10:30 a.m.
11:30 a.m.
1:00 p.m.
2:00 p.m.
3:00 p.m.
4:00 p.m.

If you arrive between caravan times, the Quarry Visitor Center features exhibits, a twelve-minute film and sales area for the Intermountain Natural History Association while you wait.

From April 1, 2012 through May 1, 2012
First, stop at the Quarry Visitor Center for a map and parking pass. Visitors will drive their personal vehicles up to the Quarry Exhibit Hall anytime between 9:15 a.m. and 4:15 p.m. The Quarry Exhibit Hall closes at 4:45 p.m. The visitor center closes at 5:00 p.m.

Canyon Area Visitor Center (Two miles east of Dinosaur, Colorado)
Closed for the season