Changes to Some Opening/Closing Dates for Services and Facilities – Check Back for Updates
Some of the opening/closing dates for facilities and visitor services in the parks have changed due to weather and/or other circumstances. See link for details and match to locations on the park map (under "Park Tools," bottom left, this page). More »
Road Conditions (Entire Park) and Road Construction Delays (if Entering/Exiting Hwy. 198)
Expect 20-minute to 1-hour construction delays on main road through parks (Generals Hwy) until Memorial Day weekend (7 a.m.-6 p.m.). See link for schedule. Call for 24-hour road conditions info: 559-565-3341 (press 1, 1, 1). More »
Vehicle Length Limits Have Changed in Sequoia NP (if Entering/Exiting Hwy 198)
Planning to see the "Big Trees" in Sequoia National Park? If you enter/exit via Hwy. 198, please pay close attention to new vehicle length advisories for your safety and the safety of others. More »
You May Have Trouble Calling Us. Use the "Contact Us" Link (Bottom Left) to Send an E-mail.
We are experiencing technical problems receiving some incoming phone calls at the parks. We apologize for the inconvenience. Please keep trying to reach us or check this website for frequently-asked questions. The search box (top, right) may be helpful.
Roads and Utilities Removal
NPS photo by Athena Demetry
Asphalt pavement in roads, parking lots, and walkways was usually removed by lifting the pavement edges using the claw of an excavator or backhoe. In locations where close spacing of trees prevented use of large equipment, contractors often made use of small equipment such as Bobcats and "mini-excavators."
Concrete manholes, vaults, lift stations, footings, foundations, and sewage treatment facilities were removed completely, if possible. If unacceptable vegetation or soil damage would result from complete removal, or if complete removal was prohibitively expensive, the concrete was removed to at least 2 feet below the surface. Any remaining concrete was fractured prior to backfilling to allow water to drain through. Concrete utilities were removed by excavators and backhoes, but in locations not accessible to this equipment, such as the sewer line running beside Deer Creek, concrete was broken up using a jackhammer and hauled away by mules. All asphalt and concrete debris was recycled by crushing into ¾ inch chunks for use as road base in future construction projects.
To protect shallow roots, underground water and sewer lines were left in place unless portions were exposed during demolition. In such cases, pipes were removed until remaining portions were 2 feet below the surface. Pipes were removed by pulling horizontally rather than by digging and lifting. Ends of pipes to be left in place were plugged with concrete to prevent channeling of groundwater.
Underground propane tanks were purged of any remaining propane and removed completely.
Where telephone lines, electric lines, or light fixtures were attached to live trees, the connecting brackets were removed completely, if possible. If the tree had grown around the bracket to such an extent that removal would injure the tree, protruding parts were cut flush with the tree and the remainder left in place. In most cases contractors were able to remove the entire fixture.
Did You Know?
The Sierra Nevada is still growing today. The mountains gain height during earthquakes on the east side of the range. But the mountains are being shortened by erosion almost as quickly as they grow. This erosion has deposited sediments thousands of feet thick on the floor of the San Joaquin Valley.