San Pedro Creek Tunnel

San Pedro Creek Tunnel

The San Pedro Creek flood diversion tunnel is approximately 6,000 feet long with a finished inside diameter of 24 feet, 4 inches lined with precast concrete segments. It commences near the Interstate 35-Interstate 10 interchange, between N. Santa Rosa Street on the west and Camaron Street on the east, where an intake approach channel is constructed (See Figure 2 for route). The tunnel inlet shaft is constructed downstream of the approach channel and is 24 feet by 4 inches in diameter dropping approximately 119 feet to the tunnel invert. The tunnel outlet shaft is 35 feet in diameter and contains embedded piping for dewatering facilities.

The tunnel inlet, outlet and maintenance shafts were constructed by conventional methods. The tunnel was constructed using a tunnel boring machine (TBM). The TBM was lowered through the outlet shaft in sections and assembled underground. The TBM bored the tunnel going upstream and in August 1989, the TBM was removed in sections through the tunnel inlet shaft. Excavated materials were removed through the tunnel outlet structure and transported to a disposal site. The tunnel became operational in June 1991.

A subsequent San Antonio River Authority contract added additional pumping capacity for tunnel recirculation. Construction of this phase was completed in June 1997.

Project Details:

Share:

Facebook
Twitter
LinkedIn
Email

Related Projects

This project will assess the long-term space needs of the River Authority and evaluate various options regarding new building designs for the property located at…
This project will begin design and construction on Mann’s Crossing Park on the Medina River, Hendrick Arnold Park (Straus medina), Trueheart Ranch, and Espada Park.…
The San Antonio River Authority is collaborating with the US Army Corps of Engineers to restore portions of the Westside Creeks, including portions of San…

Alerts

San Pedro Creek Culture Park

The restrooms at South Alamo will be temporarily closed for maintenance and repairs. We apologize for any inconvenience and appreciate your understanding. 

West Bank Trail Closure Notice

Due to the construction of a new trail and bridge, the West Bank of the trail between Schiller St. and Newell St. will be closed for the next couple of months. We apologize for any inconvenience.

Acequia Trail Notice

The Acequia trail will have heavy traffic near MROC starting May 22nd until further notice. The SAWS Acequia project will be bringing in crews to work on the lift station site and across the street. There will have flaggers to stop traffic, please use caution. 

SASPAMCO Paddling Trail

The SASPAMCO paddling trail is open from River Crossing Park to Helton Nature Park.
*Please Note: Paddling Trail from Helton Nature Park to HWY 97 is still closed due to blockages. 

River Reach Newsletter and Blog Signup

River Reach is offered as a printed, physical mailing to your residence or business. The Blog is a weekly electronic email with news and updates in order to be more environmentally conscious. Please fill out the form below and indicate your preferred method of delivery.

By submitting this form, you are consenting to receive marketing materials from: San Antonio River Authority, 100 East Guenther St., San Antonio, TX, 78204, US. You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email. Emails are serviced by Constant Contact. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.