# Brazos Valley Ionwave #26-0021 Addendum 1

Structure 2 replacement and South Canal improvements

**Posted:** September 25, 2026
**Respond By:** October 23, 2026
**Identifier:** 26-0021 Addendum 1
**NAICS:** 237990, 237110

The San Jacinto River Authority’s Highlands Division is seeking construction proposals to replace Structure 2 and improve a section of the South Canal in Harris County, Texas.
- **Government buyer:** San Jacinto River Authority (SJRA), Highlands Division; buyer contact: Grady Garrow, Senior Buyer.
- **Project scope:** Replace Structure 2 and improve 150 feet of the South Canal. The engineer-estimated construction cost is $1,304,000.
- **OEMs and vendors:** No OEMs, product manufacturers, or construction vendors are identified in the provided materials.
- **Major construction requirements:** Remove and dispose of existing Structure 2; install one 48-inch FRPMP with excavation, cement-stabilized sand base, flowable fill, and backfill; construct concrete headwalls, wingwalls, and bypass lining; and provide canal-water bypass and levee restoration.
- **Quantified materials and equipment:** 150 tons of 3-inch-by-5-inch bottom-stabilization rock; two slide gates; four stop-log frames with fittings and dry-fit/leak testing; and 280 square yards of recycled crushed-concrete base. Other lump-sum items include riprap with geotextile, staff gauges and related PVC conduit and pull boxes, and handrails and gates.
- **Other work:** Mobilization and construction survey, bonding, erosion control/SWPPP, 92 linear feet of trench safety, site access and traffic control, final grading and hydromulching, and 200 cubic yards of additional excavation, disposal, and cement-stabilized sand replacement.
- **Notable requirements:** Manage canal, surface, and groundwater during construction; provide a temporary canal-water bypass and restore the levee. No product part numbers are specified.

### Description

The San Jacinto River Authority is requesting competitive sealed proposals for replacement of Structure 2 and improvements to 150 feet of the South Canal in its Highlands Division. The estimated construction cost is $1,304,000. Proposals must be submitted through the Brazos Valley/Ionwave module; emailed proposals are not accepted, and all questions must be submitted through the module. Attendance at the in-person pre-proposal conference on October 6, 2026, is mandatory.

[View original listing](https://brazosbid.ionwave.net/PublicDetail.aspx?bidID=3958&SourceType=1)