Category: P

City of Houston 34th Street Paving

by HT&Jin P

HT&J was awarded by the City of Houston to provide engineering design for paving and drainage improvements to 34th Street from Hempstead Road to Bolin Road. 34th Street is a 6-lane divided major thoroughfare with surrounding light industrial businesses and residential areas. The proposed roadway improvements utilized the full available 100-feet ROW and included widening lanes, medians, and sidewalk widths to meet current standards.

Existing storm sewer capacities were evaluated based on newly published Atlas 14 rainfalls. Drainage improvements included increasing storm sewer sizes and a new detention pond.

City of Pearland Pine Hollow Subdivision Drainage Study

by HT&Jin P

The Pine Hollow Subdivision is located in northeast Brazoria County within the City of Pearland. It is an approximately 200 acre residential community served by curb-and-gutter storm sewer systems, ultimately outfalling into the Mary’s Creek Bypass Channel. The community experienced significant flooding during Hurricane Harvey. The City contracted HT&J to provide a drainage analysis and identify problem areas.

HT&J evaluated solutions utilizing a XPSWMM 1D/2D hydrology & hydraulic model. Recommended drainage improvements included detention pond improvements to its existing outfall pipe and overflow weir, and increasing inlet capacity and storm sewer pipe sizes. The combined improvements reduced the flooding by approximately 1-feet and provided significant improvements to the subdivision.

W. Lake Houston Parkway Bridge Hydraulic and Scour Analysis

by HT&Jin P

Hurricane Harvey flood resulted in severe scouring of the West Lake Houston Parkway Bridge across Lake Houston, prompting safety concerns. This project provided emergency repair designs for the bridge bents. Recommended repairs included additional support piers in the areas of scour, which reduced the bridge’s effective opening.

HT&J provided the hydrology & hydraulic (H&H) no-impact analysis of the proposed repairs. In addition, HT&J also provided bridge scour analysis and recommended counter measures to protect the bridge. These analyses were made utilizing a HEC-RAS 1D/2D model to evaluate water surface elevation (WSE) and velocity impacts. The project required close multi-agency coordination between City of Houston, Harris County Flood Control District, and the US Army Corps of Engineers (USACE).

City of Pearland Fite Rd and Manvel Rd Drainage Analysis

by HT&Jin P

The City of Pearland contracted HT&J to provide drainage analysis of Fite Road and Manvel Road (FM 1128). The existing drainage system consisted primarily of roadside ditches and culverts, which were holding water for extended durations after rain events.

The roadside ditches serves approximately 200 acres of drainage area. HT&J evaluated solutions to reduce ponding. Recommended drainage improvements included increasing existing culvert sizes, adding additional culverts, and providing a new 8.9 ac-ft detention pond.

Harris County 2018 Bond Program

by HT&Jin P

As part of the Harris County 2018 Bond Program and Hurricane Harvey recovery efforts, Harris County funded numerous preliminary drainage improvement studies for subdivisions throughout the County. These rapid 1-month studies were intended to gauge the extent and cost of needed improvements for the County to budget and allocate funding, as well as provide early engagement with the public on the study findings and recommended improvements.

HT&J provided preliminary drainage improvement studies and participated in the public outreach efforts for the Barwood (Pct 3), Stone Ridge (Pct 3), Sandpiper Village (Pct 4), and Fallcreek (Pct 4) subdivisions.