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Box culverts are required for drainage areas along Oregon highways, but these culverts can be difficult for fish to traverse when the water running through them is shallow and fast-moving. To alleviate this problem, according to the Oregon Coastal Salmon Restoration Initiative authorized in 1997, we replace existing culverts that do not meet fish passage standards. With the help of materials from Delta Sand & Gravel, Delta Construction Co. is currently working on two projects to replace box culverts along Highway 101 near Coos Bay, Oregon.
Southern Coos Bay Coastal Culvert Project: At the junction of US 101 and OR 42
Our southernmost coastal culvert project will replace an existing box culvert with twin, side-by-side single-span bridges. This project not only replaces failing culverts, it also removes a tide gate that currently obstructs fish passage. The goal of the project is to return the area to prime spawning grounds.
Each bridge is founded on a 20- to 24-inch round steel pile driven 90 feet through the slough into solid sandstone. Considering the corrosive coastal environment, we have constructed each bridge using class HPC 4000 concrete and additives to ensure a dense and impermeable mix fit to protect the structural rebar from salt-water corrosion. In addition to high-performance concrete, we are using stainless steel rebar, hardware, fasteners and tie-wire to ensure long lifespans for each bridge.
Our project deadline is driven by the In-Water Work Window (IWWW). This window is set to limit the work window only to times when water temperatures are the least favorable for fish migration. We are excited to report that the southbound bridge is complete. Next, we will remove the culvert, rehabilitate the stream and complete the northbound bridge. We are currently on track to finish this project prior to our original estimated end date, Oct. 31, 2018.
Northern Coos Bay Coastal Culvert Project: Under US 101 at Wildwood Drive
The northern coastal culvert project will replace two existing steel culverts with a 16-foot by 10-foot by 160-foot concrete box culvert and a 16-foot by 10-foot by 56-foot concrete box culvert. By replacing the current steel culverts, we will remove current fish passage barriers. The new box culverts will be filled with fish rock and native soil to mimic the natural stream environment so that while the concrete will protect fish from predators, the internal environment will encourage fish movement.
The 165-foot culvert runs 50 feet below the road grade of US 101, which requires a “top down” approach to the construction, requiring the installation of a temporary bridge, retaining walls and a shoring system of more than 400,000 pounds of structural steel. Delta’s crew finished setting the last of the 40 precast concrete sections of this longer culvert in late June and has started backfilling 15,000 yards, in addition to starting the shorter cuvlert under Wildwood Drive.
After Labor Day weekend, we will reduce US 101 to one lane with 24-hour flagging (scheduled to last for one month). We will then remove the detour bridge, backfill and complete final paving to meet our Sept. 30 paving window end date. Once both culverts are complete, we will excavate several hundred feet of new stream channel to connect the new culverts with existing streams.
Making Progress While Protecting Local Ecology
Each job at Delta is a team effort. We work closely with ODOT’s in-house biologist and various other regulatory agencies to ensure that we meet necessary regulations and deadlines for our culvert projects. We appreciate ODOT’s focus on moving projects forward, while remaining cognizant of traffic and environmental restrictions.
Delta fully supports the construction of environmentally-friendly structures in the state of Oregon and beyond. It is our hope that with the restoration and replacement of outdated, non-compliant culverts, we may help salmon and other native fish species thrive in the Pacific Northwest for many years to come.
Feel free to contact us with any questions you have about Delta Construction Co. projects and to learn more about our commitment to protecting the environment we build upon.
The supply for aggregate materials is not endless, and Delta Sand & Gravel believes that it is our responsibility to cultivate an active recycling culture, as well as to encourage the environmental responsibility of aggregate material producers everywhere. Delta offers recycled aggregate products so that our customers may meet LEED and sustainable building standards.
Repurposing demolition debris
By repurposing demolition debris, we can use the resources that we have already invested in infrastructure to extend the life of each aggregate product and decrease our impact on the environment. We recycle many products at our mining facility in our dedication to reducing waste, protecting Lane County’s natural resources and increasing the supply of building aggregates. We also use many of these same products in our reclamation process.
The products we recycle and reclaim include:
- Asphaltic concrete
- Building demolition
- Clearing and grubbing debris
Yes, we take tires!
In 2017, Delta purchased tire equipment to extend our recycling services to Lane County businesses and residents seeking environmentally friendly alternatives to trashing old tires. Reach out to us for pricing.
Unfortunately, we are not yet equipped to reclaim and recycle all waste products. Our DEQ-approved site is designed for construction demolition only and some products are not permitted. If you want to recycle treated wood, paint and tar cans, plastic or household garbage, appliances, fixtures, electronics, furniture, carpet, flooring or asbestos [friable], then visit The City of Eugene’s website. There, you will find more information about additional recycling resources in and around Lane County.
An environmentally conscious community
We are proud to be one of many construction and mining companies in Eugene that take recycling and environmentally friendly practices very seriously. Please join us in congratulating our fellow construction companies who received Oregon’s 2017 Mined Land Reclamation Awards, and be sure to vote for us in 2018!
Delta Sand & Gravel Co. is happy to help provide recycled material for your next project or provide a place for you dispose of your construction demolition. Please call us to learn more about our recycled material offerings, or about which items are accepted in our landfill and reclamation areas.
Delta Sand and Gravel is proud to be partnering with Yoncalla Early Works and Yoncalla Elementary School to construct an outdoor playscape for kids younger than third grade in Douglas County, Oregon.
What is Early Works?
Early Works is a 10-year Children’s Institute initiative launched in 2010 to improve the development of young children in Oregon and to support their health and education, as well as their families. Currently, there are two Early Works sites: the original site at Earl Boyles school in Southeast Portland, and the second site at Yoncalla Elementary in Douglas County, Oregon.
The Children’s Institute and the Roseburg–based Ford Family Foundation joined forces with the Yoncalla School District to launch the rural Early Works site at Yoncalla Elementary in 2012. Yoncalla Elementary now serves 20 of its roughly 140 students with the Early Works Program.
Early Works schools focus on three key aspects of development:
- Implementing high quality education from birth;
- Supporting family engagement in their children’s learning; and
- Connecting health with schools.
Children within the program range in age level from less than one year old to the third grade. For more information about Early Works, visit their website.
What does the Yoncalla playscape provide for children in Douglas County?
Of Early Works’ goals for the program, social and emotional development, as well as engagement, attendance and STEM learning are all primary focuses in the construction plan for this new play space. With an art area, woodworking station, chalk wall, water pump and creek bed, musical play area, building zone and more, this site is rich with opportunities for young children to develop skills such as sharing, hand-eye coordination, creative thought processing and practicing physical activity.
What were Delta’s project responsibilities?
Delta is working on this project at a significantly reduced rate to give back to a community that many of its employees are a part of, and to support the great work that Yoncalla School District is doing to create successful learning environments for its students in the face of significant funding challenges.
Delta is performing the following duties for the new play space:
Delta Sand & Gravel:
- Supply of gravels, beach sand and topsoil (loam)
- Trucking of materials to the jobsite
Delta Construction Co.:
- Underground drainage
- Gravel, sand and topsoil placement
- Concrete forming
- Project management support
We also coordinated the hiring of additional project contractors and subcontractors, and the donation of materials and labor from these companies to help construct this fun educational space at the lowest cost to Yoncalla School District.
Thank you to our fellow contributors to this project:
Rexius Commercial Landscape Division is contributing a partial donation to the Yoncalla Playscape Project, suppling and installing play chips, topsoil, sod, plants, and other landscaping components.
Island Fence is installing fencing around the project.
Herc Rentals in Coburg is renting equipment to the Project under partial donation.
Knife River Eugene is supplied and delivered concrete under partial donation to the project along with Delta Concrete.
Working with Delta Sand & Gravel
Delta Sand & Gravel and Delta Construction Co. are always looking for ways to create and cultivate resources for our community. Our construction and aggregate material production employees are very important to us, and we are excited to be able to support Douglas County, where many of them live and raise their families. If you have any questions for Delta about a donation or partial donation, our aggregate production, aggregate hauling or construction services, feel free to contact us. We offer free quotes and our central location between Springfield and Eugene make pickup simple for you.