SH-99 Grand Parkway from US-290 to I-45 is now open. No tolls on this segment of SH-99 until Februrary 15.
The Greater Houston Transportation and Emergency Management Center City of Houston Harris County METRO Texas Department of Transportation
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Speed and Travel Time Reports

IH-10 Katy IH-10 East IH-45 North IH-45 Gulf
US-59 Eastex US-59 Southwest US-290 Northwest US-90
IH-610 West Loop IH-610 East Loop IH-610 North Loop IH-610 South Loop
Hardy Toll Road Beltway 8-North Beltway 8-West Beltway 8-South
Beltway 8-East SH-288 SH-225 SH-146
SH-249 SH-99 West Spur-330 Westpark Tollway

  SH-146 Detailed Data
Mainlanes Northbound
FromToData AgeDistance (miles)Link Travel Time(m:ss)Cumulative Travel Time(m:ss)Speed(mph)
Port RdWharton Weems10:50:30 AM21:581:5861
Wharton WeemsSpencer Highway10:50:30 AM1.901:583:5658
Spencer HighwaySH-22510:50:30 AM1.801:515:4758
SH-225Fred Hartman Bridge North10:50:30 AM2.602:198:0667
Fred Hartman Bridge NorthW Texas10:50:30 AM1.902:0010:0657

Mainlanes Southbound
FromToData AgeDistance (miles)Link Travel Time(m:ss)Cumulative Travel Time(m:ss)Speed(mph)
W TexasFred Hartman Bridge North10:50:30 AM1.901:471:4764
Fred Hartman Bridge NorthSH-22510:50:30 AM2.602:254:1265
SH-225Spencer Highway10:50:30 AM1.802:066:1851
Spencer HighwayWharton Weems10:50:30 AM1.901:367:5471
Wharton WeemsPort Rd10:49:29 AM22:1110:0555

< 20mph 20-29mph30-39mph 40-49mph 50+ mph Not Available