Who Issues a Driveway Culvert Permit in Fort Bend County?
In unincorporated Fort Bend County, the county issues the permit for a driveway culvert on a county road. For a home or an ag-exempt property on an open-ditch county road, the county Road and Bridge Department handles it. On an FM road or any other state highway, TxDOT issues the permit. Inside city limits, the city does.
The office that issues the permit also has the final word on the pipe size. So call that office before anyone buys pipe. When the rules leave the pipe to a private installer, that is our driveway culvert installation work. Rules change, so confirm with the office first.
Which office issues the permit for your road?
| Where the driveway meets the road | Who issues the permit |
|---|---|
| Open-ditch county road, home or ag-exempt property | Fort Bend County Road and Bridge Department |
| Any other driveway onto a county-maintained road | Fort Bend County Engineering Department, online |
| FM road or other state highway | TxDOT, through its Fort Bend Maintenance Office |
| Street inside city limits | That city |
TxDOT’s highway glossary defines the state highway system as the highways TxDOT builds and maintains. FM roads are one part of that system. County roads and city streets sit off it. A Katy or Fulshear mailing address does not settle it. City limits and the road itself do.
Inside a city, the city’s rules apply. The City of Katy runs its own culvert permit. In Rosenberg, city public works installs home driveway culverts, and the homeowner buys the pipe.
What does Fort Bend County ask for on a county road?
For a home or ag-exempt lot on an open-ditch road, the county points you to Road and Bridge. That office “can assist in installing a basic gravel driveway connection,” the county’s permit page says. The county’s requirements sheet sends those owners there “for driveway permit and installation” as well.
A Road and Bridge driveway sheet effective October 2022 adds these details:
- one driveway on frontage under 105 feet, two on 105 to 210 feet, three past 210 feet
- driveway lengths from 20 to 40 feet
- single row fees from $500 for 18 or 24 inch pipe to $1,000 for 54 or 60 inch
- sloped end treatments on roads posted 40 mph or more (plastic is fine on home and farm drives)
The sheet caps what Road and Bridge sets at a single row of 60 inch pipe. Bigger crossings need an Engineering permit, and so does concrete pipe with end treatments over 24 inches. The sheet says a contractor sets those. Ask Road and Bridge whether the 2022 sheet still holds.
Every other driveway onto a county road goes through the online application. For a home driveway on a curb-and-gutter street, the county asks for:
- a site plan showing the driveway’s location and size
- a traffic control plan for the install, and a TxDOT typical detail is acceptable
- a fully executed performance bond of $5,000 per driveway, as an original hard copy
The posted fee is $150 per home driveway. Projects started before the permit is issued pay double fees.
What does TxDOT ask for on an FM road or state highway?
TxDOT’s Houston District takes driveway applications online through its Driveway Access Permit system. It routes each one to the maintenance office for the site, and Fort Bend has its own. A home with up to four dwelling units files as a Low Use Access Permit. So does a farm entrance for occasional use. That checklist asks for:
- a copy of the executed property deed
- a site map and an aerial photo with the spot marked
- a sketch with the driveway dimensions, and no engineer’s seal is needed
“If the applicant does not own the property, we cannot issue a permit,” the checklist says. The district’s instructions say the drawing shows the driveway width and the return radius. It also shows the ditch flow line and the nearest culvert sizes up and down the ditch.
The access point gets staked on the ground for a field check. TxDOT’s access management manual covers the build. No work starts in the right of way until the permit is fully executed and TxDOT has 24 hours’ notice.
A private home driveway can be up to 24 feet wide, with at least a 15-foot radius at the pavement. A typical farm or ranch entrance has 25-foot return radii and a 20-foot throat. The gate has to sit far enough back to hold at least a pickup and trailer.
Pipe ends in the right of way get sloped safety end treatments, with no headwalls. The permit holder furnishes all the materials. A TxDOT inspector then reviews the finished driveway.
Who decides the culvert pipe size?
The road authority does. On a state highway, the size of any drainage structure “shall be approved by TxDOT,” its manual says. The same manual bars driveway work that alters or impedes drainage in highway side ditches. In Harris County, culverts “shall not be set until pipe size and grade stakes are provided” by the county.
The City of Katy’s form says the city will give you “the proper size and grade requirements” before installation. Waller County’s application says the same about its own roads. Get that size before you buy pipe.
What does the homeowner do, and what does the contractor do?
The paperwork belongs to the owner. On a state highway, “the property owner or their authorized representative” files the application. Across the forms above, these steps fall to the owner:
- find out who maintains the road, then apply
- stake the driveway spot, which Austin County wants marked with your name and 911 address
- buy the pipe where the rules put that on you, as in Waller County and Rosenberg
- give the notices the permit names, such as TxDOT’s 24-hour notice
- keep the culvert open and flowing once it is in
Where a private installer does the work, the contractor’s part is the dig and the pipe. That means setting the pipe at the size and grade the office gave, then backfilling it. Several offices here check the set pipe before it is covered. The approach then gets shaped to meet the road.
State law puts the 811 notice on whoever digs, at least 48 hours ahead. Past the right of way, the drive to your house or barn is gravel driveway and pad work. On a new lot, the path may need land clearing first.
What do the counties next door ask for?
In each county next door, a state highway still goes to TxDOT.
- Waller County: the county installs the pipe for a fee, or the applicant or a private contractor does it. Either way the county sets the size and grade, and the owner buys the pipe.
- Harris County: in unincorporated areas, driveway and culvert permits go to the County Engineer. Work must start within six months and finish within twelve.
- Austin County: the owner and the precinct commissioner both sign the permit form. The form lists a penalty if work begins before the paperwork is in.
Ready to set the pipe?
Get the permit path and the pipe size from the road office first. Then call or text (979) 824-2296. We look at the entrance and the drive behind it, and we put the quote in writing. Our culvert and entrance work page covers the pipe and the approach.