Culvert Rehabilitation and Reline


What is Culvert Rehabilitation?

Often considered the same as sliplning. However, in the sense that DLVEWS considers culvert rehabilitation is a full service offering for any culvert or sewer needs. If a culvert needs rehabilitation it could include: a slipline design, a spot repair, joint repairs on RCP or other via the HydraTite mechanical joints seals, or full dig and replacement with a 100 year service life solution.

Crews doing Culvert Rehab


Ultimately, 50-100 years but we often consider designing for closer to 75-100+ years as most of the materials are meant to last at least that long.  All project aspects must be considered throughout design process including abrasion of the stream materials, pH of the water and soils, resistivity, pipe wall thicknesses, etc. 


There are many methods of culvert rehabilitation which include but are not limited: paved inverts, sliplining or relining, dig and replace, or spot repair, joint repairs, structural plate lining and tunnel liner plate lining, spirally wound liners.  DLVEWS, Inc. always focuses on pointing the customer towards the proper consideration that will meet their structural needs as well as their hydraulic needs; two of the most important criteria when considering a culvert rehab project.



At this time, folks have many options to choose from which makes culvert rehab a terrific option to consider any time something comes up. Even if a culvert is partially failed, do not hesitate to contact us for a potential solution. DLVEWS has been involved in many project recently where the pipe was already in severe condition and we were able to rehabilitate them.

How long does it take to complete a culvert rehab job?

That question is a loaded one. It should first be said that rehab/sliplining will take a fraction of the time that dig and replace would take; hence one of it’s biggest benefits. The timeframe for a culvert rehab/sliplining project is dependent on many factors. Some of the items that should be considered for the time it takes to complete a slipline/rehab job include but are not limited to: length and diameter of the pipe, establishing bypass of the water if/as needed, any cleaning of the host pipe needed such as silt/rock/debris removal, grouting, job site clean up, and others.


When a culvert is suspected of failing an inspection would need to take place. If the pipe was in need of rehabilitation DL VEWS would provide a solution based on the diameter shape and structure the pipe would be fitting into. From here based on the findings during the inspection of the pipe we then would provide a recommendation to our clientele with the right product and the necessary services needed. The final piece is rehab the pipe. Once when the crew is done completing the install and rehab our clients have a completely full functioning culvert that involves little environmental impact.
One of the most expensive parts of a culvert project is the installation of a new pipe. If you want to cut down on costs but still maintain a long-lasting, fully functional culvert, then it’s time to think about using a culvert lining system such as Snap-Tite.

Snap-Tite has a proven record in the culvert rehabilitation business, and their products are designed to be cost-effective, flexible, and easy to install. No more overpriced installation teams. No more excessive excavation stress.

Just Snap-Tite, and it’s all right.

Channeline is a glass reinforced plastic; better known in the industry as GRP.  A hyper-versatile solution for the stormwater and wastewater industry, Channeline can be used for some of the toughest environments including high H2S (hydrogen sulfide), brownfields, pH sensitive areas, highly salted areas, etc.  It can be used to slipline and rehab culverts & sanitary sewers.  It can also cover a wide range of live and dead loads.  Channeline is often utilized in areas where excavation pits must remain minimized or alleviated.  It can be designed in multi-piece segments to be lowered through existing manhole or access points as necessary.


Because of it’s versatility in design, Channeline has the ability to make unique shape offerings which will optimize your hydraulics while optimizing constructability.  Unique shape solutions include, but not limited to:


  • Egg or Ovoid
  • Box Culverts
  • Box Culverts with a cunette for concentrating flow during low water events
  • Cattle crossing or pedestrian tunnel shapes (popular in railroad culverts)
  • Pipe Arches
  • Circular
  • And much more

Cost-Effective & Flexible

DLVEWS has engineered culvert lining solutions for all shapes and sizes, including but not limited to arches, ovals, rounds, box culverts, and bridges. Their products are designed to be flexible and easy to install, so your summer crews can become culvert lining installers during the winter.

All lining options provided to you by DLVEWS can be designed as a standalone product or direct bury structure, both of which meet most stringent DOT specifications and requirements.

Reline LIVE with Don LeBlanc, P E Annular Space

Since we had so many questions and interest about grout when Ryan Harrington hosted Reline LIVE we thought Don’s time would be be spent addressing all things grout. He will focus his 30 mins around the use of low-density cellular concrete to fill annular space in large and small reline projects.

Reline LIVE with Don LeBlanc Large Diameter Projects

In this episode of Reline LIVE Don highlights various reline projects that each had their unique challenges. We will focus on several different sizes, shapes, and materials and discuss why each solution was selected. This Reline LIVE will be an “overview” for which we may consider doing several webinars that take a deeper look into each solution.

Reline LIVE with Don LeBlac and Andy Sherwin of Channeline

During this Reline LIVE we will be adding a new topic and exploring a sanitary sewer case study as well as a culvert rehab case study. Large diameter pipes and culverts represent the backbone of any city’s utility network for the collection and disposal of sewage and effective drainage of stormwater. In many cases the fabric of these pipelines, which may consist of brick, stone, concrete or clayware will have been constructed decades ago and although proven resilient, has eventually succumbed to the ravages of time, suffering the effects of H2S attack or erosion and may even be exhibiting signs of imminent failure due to structural loading beyond that of its remaining capability. At this point, the need arises to consider the means by which the structural rehabilitation of these pipelines and ducts can be achieved whereby a new, 100-year plus life expectancy can be provided with a high degree of confidence. Channeline international has been providing bespoke Structural Glass Reinforced Plastic (GRP / FRP) lining sy­stems since the early 1980’s, they have en­gineering and manufa­cturing experience for both Circular and Non-circular buried infrastructure worl­dwide.

Convenient Service

As part of our commitment to client satisfaction, DLVEWS is available to perform on-site visits and culvert inspections. Our extensive history in the industry has left us with a thorough understanding of what to look for when inspecting a culvert for damage or deterioration.

We also offer technical assistance to all clients, which includes assistance with culvert specifications and drawings, transparent discussions about service quotes, and help understanding installation best management practices.

We recommend Snap-Tite because it’s the best in the industry, but we are more than happy to help guide you to an alternative culvert lining system. We want you to feel satisfied with your project outcome.

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Culvert Lining Systems