Keystone Bridge
About
Keystone Bridge is a natural arch in Petrified Forest National Park in eastern Arizona, managed by the National Park Service. The nearest town is Sun Valley, about 16 miles away. The arch sits at roughly 5,566 feet. Spring and fall are the most comfortable times to visit. Typical averages from a nearby weather station show April highs around 68°F and October highs around 70°F, while July highs reach about 92°F and winter lows dip to around 22°F. Several trails start close by. Blue Mesa Trail is about 0.4 miles away and Historic Blue Forest Trail about 0.5 miles. The Tepees North and South pullouts are each about 1.5 miles off, and Agate Bridge is about 3.7 miles away.
Arch Facts
Elevation
5,566 ft
Land manager
National Park Service
Elevation from USGS 3D Elevation Program terrain data (about 10 m resolution).
Location
Keystone Bridge
Arizona
Name and location: U.S. Geological Survey, Geographic Names Information System (GNIS). Elevation: USGS 3D Elevation Program. View the GNIS record.
Facts about this place
When to go
Best time to go: Mar–May. The mildest months here, with typical highs of 61–78°F and lows of 30–44°F.
Typical monthly averages (not a forecast) from the Painted Desert Np, AZ weather station, 9.3 mi away. High / low in °F, and days with snow.
- Jan48° high22° low
- Feb52° high25° low
- Mar61° high30° low
- Apr68° high35° low
- May78° high44° low
- Jun89° high53° low
- Jul92° high60° low
- Aug88° high58° low
- Sep82° high51° low
- Oct70° high40° low
- Nov58° high28° low
- Dec46° high22° low
Where it is
- Petrified Forest National Park · National Park Service
- Nearest town
- Sun Valley, Arizona · 16 mi
- Managed by
- National Park Service
Source: NPS Land Resources boundaries; USGS PAD-US 4.1; USGS GNIS populated places
Conditions
Active alerts for Petrified Forest National Park as of Oct 9, 2026:
Park Headquarters Phones are Down
Information · posted Aug 24, 2026
The Painted Desert Oasis Gift Shop, Gas Station and Restaurant are Open!
Information · posted Aug 24, 2026
Source: NPS Alerts API
Nearby
- Blue Mesa TrailHiking0.4 mi
- Historic Blue Forest TrailHiking0.5 mi
- The Tepees North PulloutHiking1.5 mi
- The Tepees South PulloutHiking1.5 mi
- Puerco PuebloHiking3.7 mi
- Agate BridgeHiking3.7 mi
- Jasper Forest TrailHiking4.4 mi
- Crystal Forest TrailHiking5.3 mi
Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)
