Dewey Bridge Agate: Agate Rockhounding in Grand County, Utah

Updated August 2026

Dewey Bridge Agate is a mapped rockhounding spot in Grand County, Utah. Reported finds include agate. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Grand County
State: Utah
Nearest road: Dome Plateau Trail
Coordinates: 38.81808, -109.31097

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified: April 1, 2026

BLM Utah, Rockhounding overview
Utah Geological Survey, collecting guidelines
SITLA, surface use rules
Community submissions reviewed against published agency rules

Found at Dewey Bridge Agate

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Agate Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Dewey Bridge Agate.

Across the state line from Dewey Bridge Agate

Dewey Bridge Agate is close enough to the Utah border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Dewey Bridge Agate FAQ

Where is Dewey Bridge Agate?+

Dewey Bridge Agate is in Grand County, Utah, at 38.81808, -109.31097. Nearest road: Dome Plateau Trail.

What rocks and minerals can you find at Dewey Bridge Agate?+

Dewey Bridge Agate is reported to produce Agate.

Is collecting allowed at Dewey Bridge Agate?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Dewey Bridge Agate?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

How do I get to Dewey Bridge Agate?+

Open the directions link to navigate to 38.81808, -109.31097 in Google Maps. The nearest road is Dome Plateau Trail.

More rockhounding in Utah

See all 270 Utah spots →

Open Dewey Bridge Agate on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.