Sims Bridge
Sims Bridge Trail is a 0.5 miles trail in Shasta-Trinity National Forest, California. The Forest Service rates it trail class 5, fully developed. It is open to hiking, horse and pack stock and mountain biking.
Trail conditions, closures and hazards are not tracked here. The Shasta-Trinity National Forest official page carries current alerts and closure orders.
Map
One end Other endLine simplified to about 100 metres. Basemap from the USGS National Map.
| One end | 41.0640, -122.3595 · Directions ↗ |
| Other end | 41.0602, -122.3625 · Directions ↗ |
The ends are the two ends of the longest connected chain of segments. The record does not say which is the usual start. The trail is recorded as 12 segments.
The trail
| Length | 0.5 miles |
| Trail class | 5, fully developed |
| Type | land trail |
| Surface | asphalt, concrete, native material, other (firm, hard, paved) |
| Typical grade | 0-5 percent |
| Typical tread width | 18-24 inches, 48-60 inches |
| Minimum width | over 42 inches, 24 inches |
| Motor vehicles | Closed to all motorized use year-round |
| Accessibility | At least one segment meets Forest Service accessibility guidelines |
| Trail numbers | 04W21, 04W21A, 04W21B |
| Forest | Shasta-Trinity National Forest (unit 0514) |
| States | California |
| Detail published | management level, with uses |
Values are the set across all segments. Class 1 is minimally developed and class 5 is fully developed. Grade and width are the forest's typical values, not measured extremes.
Allowed uses
| Hiking | Allowed year-round |
| Horse and pack stock | Allowed |
| Mountain biking | Allowed year-round |
A use is listed when the Forest Service records it as managed, accepted or discouraged on any segment. Discouraged still means legal. Uses marked restricted are left out. Where the forest publishes a Motor Vehicle Use Map, that map governs motorized use.
Trailheads
The Forest Service recreation layer records no trailhead within a third of a mile of this trail's line. Many trails start from a road pullout or another trail with no trailhead record. The forest's recreation pages list the trailheads it does publish.
Distance is from the point to the nearest part of the trail line. Season text is what the forest wrote and is often a season name rather than a date. The recreation page link goes to the Forest Service site, which may redirect to the forest's recreation index.
Camping nearby
Campsite Atlas cards carry site counts and booking links from Recreation.gov. Forest Service cards come from the recreation layer and link the agency page.
Fire nearby
- PrescribedWhite Rock Rx
41 mi from the trail midpoint
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Reference
Questions people ask
How long is the Sims Bridge Trail?
0.5 miles, the sum of the 12 segments the Forest Service records under this name in Shasta-Trinity National Forest.
Source: Forest Service trail layer
What is allowed on the Sims Bridge Trail?
hiking, horse and pack stock and mountain biking. The trail is closed to motor vehicles year-round.
Source: Forest Service trail layer
Where does the Sims Bridge Trail start?
The line begins at 41.0640, -122.3595 and ends at 41.0602, -122.3625. No Forest Service trailhead is recorded within a third of a mile of it. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the Sims Bridge Trail in a wilderness area?
No. The trail line does not cross any polygon in the National Wilderness Preservation System layer.
Source: Wilderness Connect
Where can I camp near the Sims Bridge Trail?
Sims Flat Campground (0.1 mi) is within five miles of the trail. Site counts and booking links are on Campsite Atlas.
Source: Campsite Atlas
How developed is the Sims Bridge Trail?
Trail class 5, which the Forest Service describes as fully developed. Class 1 is a minimal, unimproved route and class 5 is fully developed, often paved.
Source: Forest Service trail layer
How steep and how wide is the Sims Bridge Trail?
The typical grade is 0-5 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Is the Sims Bridge Trail accessible?
The Forest Service has evaluated part of this trail as meeting its accessibility guidelines. The surface is asphalt and concrete and native material and other.
Source: Forest Service trail layer
Who manages the Sims Bridge Trail?
Shasta-Trinity National Forest, Forest Service unit 0514. The trail is in California.
Is there a fire near the Sims Bridge Trail?
1 active incident within 50 miles of the trail midpoint as of 2026-09-18, the nearest White Rock Rx at 41 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 12 segments named SIMS BRIDGE in the Forest Service TrailNFS_Publish layer, administrative unit 0514. Wilderness overlap is tested against the National Wilderness Preservation System layer from Wilderness Connect. Trailheads and Forest Service campgrounds come from the Forest Service Recreation Opportunities layer. Data refreshed September 17, 2026. The methodology page explains how segments become trails.