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Big Creek Bridge: Jasper & Agate Rockhounding in Lane County, Oregon

Check locally3 mineralsLane County, OregonUpdated August 2026
Minerals reported
3
Elevation
40 ft
Best months
Year-round

Big Creek Bridge is a mapped rockhounding spot in Lane County, Oregon. Reported finds include jasper, agate, petrified wood. Below: coordinates, access notes, nearby spots, and trip-planning links.

Plan your visit

Confirm rules before collecting

State
Oregon
Nearest road
Oregon Coast Highway
Get directionsView on Google Maps

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

Land & collecting status

Confirm rules before collecting

Land status here is not confirmed. Verify with the managing agency before collecting, federal, state, and tribal rules differ.

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.

Best time to visit Big Creek Bridge

Comfortable months (45 to 90°F highs)

Conditions here are workable year-round, with typical highs from 53°F in winter to 64°F in summer.

Climate normals: NOAA 1991-2020 monthlies, YACHATS station (11 mi away).

Geology at Big Creek Bridge

This spot sits on Yachats-Tillamook Group; Yachats Basalt, mapped as basalt flows, volcanic bombs bombs; lithology: basalt, and basaltic andesite flows that formed roughly 56 to 34 million years ago. Petrified wood typically comes from volcanic ash beds like the ones associated with this ground, where buried forests were slowly replaced by silica.

Mapped unit
Yachats-Tillamook Group; Yachats Basalt
Age
56–34 Ma (Eocene)
Rock types
basalt flows, volcanic bombs bombs; lithology: basalt, and basaltic andesite flows
Elevation
40 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Today's weather

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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:

Found at Big Creek Bridge

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

Nearby rockhounding spots

Other rockhounding spots within driving distance of Big Creek Bridge.

Big Creek Bridge FAQ

Where is Big Creek Bridge?+
Big Creek Bridge is in Lane County, Oregon, at 44.17637, -124.11487. Nearest road: Oregon Coast Highway.
What rocks and minerals can you find at Big Creek Bridge?+
Big Creek Bridge is reported to produce Jasper, Agate, Petrified Wood.
Is collecting allowed at Big Creek Bridge?+
Confirm rules before collecting. Land status here is not confirmed. Verify with the managing agency before collecting, federal, state, and tribal rules differ. Always confirm current rules with the managing agency before a trip.
What tools should I bring to Big Creek Bridge?+
A rock hammer, sturdy gloves, and a padded bag cover petrified wood hunting. Most pieces are surface float, so walking slopes and washes beats digging.
When is the best time to visit Big Creek Bridge?+
Big Creek Bridge is workable year-round.
How do I get to Big Creek Bridge?+
Open the directions link to navigate to 44.17637, -124.11487 in Google Maps. The nearest road is Oregon Coast Highway.

More rockhounding in Oregon

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