Fluid flow enhancing devices disclosed herein are adapted to enhance flow of fluid through subsurface watershed conduits, for example, culverts, drainpipe and the like. Such fluid flow enhancing devices advantageously enhance watershed runoff functionality in subsurface watershed conduits by altering watershed flow from a parabolic flow pattern to a rotational flow pattern while still accommodating fish passage requirements. This change in flow pattern beneficially provides turbulence that disrupts and flushes debris out of the subsurface watershed conduits. This disruption and flushing establishes a passive cleaning functionality within the subsurface watershed conduits that serves to clean the subsurface watershed conduits after suitable upstream water delivery event (e.g., heavy rain, controlled water release, etc.). In doing so, these fluid flow enhancing devices overcome one or more shortcomings associated with subsurface watershed conduits in a manner that overcomes drawbacks associated with conventional design and in-use considerations for such subsurface watershed conduits.

A method for managing the flow of water beneath a ground surface uses modules. Assemblies of such modules are disclosed. The modules include supports and a deck portion, and the supports are spaced apart and form multiple channels with a main section of the deck portion. The deck portion also includes at least one section extending from a main section.

A culvert system includes a flexible toe wall that connects to and extends down from the bottom of the culvert. The flexible toe wall is capable of readily conforming to various shapes of the trench conditions provided to receive the toe wall, before or as the trench is backfilled.

A pre-stressed concrete box culvert includes a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall. The first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, and the first and the second sidewalls each include a free end that has at least one male or female connector. The pre-stressed concrete box culvert includes a three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall. The third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, and the third and the fourth sidewalls each include a free end that has at least one male or female connector to mate with the at least one corresponding male or female connector arranged at one of the respective free ends of the first and the second sidewalls.

The method teaches constructing a culvert using discarded tires. The culvert's stress points are reinforced by truck tires. Additionally, the integrity of the culvert is kept intact using a predetermined formula for every 10 feet of culvert constructed.

Structures and methods for controlling road temperature over an underpass space are disclosed, including a structure comprising: footings underlying the road supporting a support assembly comprising: an inner shell; a plurality of beams surmounting the inner shell; an insulating material for thermally isolating the road and the remainder of the support assembly from the underpass space; an outer shell; a temperature control assembly; temperature sensors disposed in the road and the support assembly; and a computer processor configured to receive temperature and weather forecast data; predict changes to the temperature of the support assembly and the road based on the temperature and forecast data; and control the application or removal of heat to the support assembly, based on the predicted changes to the temperature of the support assembly and the road, resulting in the road maintaining a temperature within a predetermined range.

A culvert to ditch transitioning device for lining a ditch proximate to an end of a culvert includes an end panel, which has an orifice positioned therein, and a pair of side panels. A terminal segment of the culvert, which extends into the ditch, can be inserted through the orifice so that a first face of the end panel is in substantial abutment with an end embankment of the ditch. Each side panel is coupled to a respective opposed end of the end panel and extends substantially perpendicularly therefrom. The pair of the side panels lines side embankments of the ditch, proximate to the end embankment. The end embankment and the lined portions of the side embankments thus no longer require lawn care, such as mowing, trimming, and weeding.

A culvert marker has a pole connected to the wire rope; a wire rope; and a base. A marker has a structural base; a wire rope extending out of the structural base; and a mast supported by the wire rope. A marker has a structural base; and a wire rope extending out of the structural base, with a central axis defined by the wire rope projecting through an area defined between plural ground-or-support-surface contacting points that are defined by the structural base and are spaced angularly about the central axis. Related methods and combinations are also discussed.

Protection of upland areas adjacent to a variety of water body shorelines from flooding events by combining modified drainage culverts with and hidden by natural ecosystem flood attenuation environments.

A culvert system includes a flexible toe wall that connects to and extends down from the bottom of the culvert. The flexible toe wall is capable of readily conforming to various shapes of the trench conditions provided to receive the toe wall, before or as the trench is backfilled.