Overview
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SH 99 Segment B1

Overview

Segment B-1 is an environmentally-cleared, not-yet-constructed four lane toll road extending ~14 miles from FM 646 in League City (Galveston County) to south of FM 2403 in Alvin (Brazoria County). In addition to the SH 99 tollway with two mainlanes in each direction, Phase I of the project includes discontinuous two-lane frontage roads between SH 35 and I-45, grade-separated interchanges, two new direct connectors at SH 35, and nearly 6 miles of non-tolled operational improvements along SH 35 from south of 2403 to Steele Road.

Phase II includes constructing four direct connectors at the I-45 interchange. These improvements are being delivered under a separate contract, which is anticipated to let in 2028.

This main map has cities, counties, toll facilities, and other TxDOT roadways. This map highlights State Highway 99 (Grand Parkway Project and System). Legend Consists of six key features: A solid dark blue line, as GPTC System: SH 99 open to traffic from Fort Bend and Harris County line eastward to SH 146. A red dashed line on top of a white on blue line, as GPTC System: SH 99 under development from SH 96 westward to south of Alvin, TX at the intersection of SH 35 and FM 2403. A white on dark blue dashed line, as GP Project: SH 99 proposed future segments. From the intersection of SH 35 and FM 2403 westward to I-69. A white on dark blue line, as GP Project: SH 99 open to traffic from I-69 and FM 2759 northward to and the Fort Bend and Harris County line. A white on spruce green line, as Other regional toll road. A dashed whit on spruce green line, as Other regional toll road: proposed future roadway.