Culverts and Headwalls in Abilene, Texas

Where a driveway, a farm road or a county street crosses a draw, the culvert under it decides whether the crossing survives the next flood. Culverts and headwalls look simple, a pipe or a box and a wall at each end, but most failures start at the ends: water scours the soil beside the headwall, undermines the apron and then enlarges until the road above begins to settle. We build culverts and headwalls in Abilene and the Big Country to prevent that sequence.

Rain in this region is irregular. Dry months are followed by short, intense storms that bring more water to a crossing in an hour than it saw in a season, and the clay soils shed runoff quickly. The structure has to carry that flow without overtopping the road, hold the embankment around it and keep the channel stable above and below.

We coordinate excavation, pipe laying and backfill through partners we manage, and the concrete trade partners form and place the headwalls, wing walls, aprons, toe walls, cutoff walls and box culvert sections or their cast-in-place equivalents.

What we build at the ends

A headwall holds the road embankment back from the pipe, directs flow and protects the pipe end from damage. We form and pour straight headwalls, flared wing walls and U-shaped structures to the dimensions on the drawings, with the reinforcement, weep holes and keyways the design calls for.

Aprons and toe walls are poured at the same time or in a planned second stage, since these prevent scour. For box culverts we set precast units on a leveled base or pour them in place when length, skew or loading make that practical. Partners under our management handle the heavy excavation, so the concrete crew arrives to a trimmed, compacted and surveyed bed.

Owners with crossings

Municipal and public works departments replace aging culverts as part of street programs, agriculture and dairy operations need crossings for field roads and feed lanes, and oil, gas and midstream operators build lease roads that cross drainage.

The Texas Comptroller's 2025 profile of Dyess Air Force Base counts 5,377 total direct employees, including 4,764 active-duty military personnel. Roads that serve a base and its commuters cross creeks and draws too, and agencies responsible for them look for contractors who can replace a culvert with a short, planned closure.

Crossings along the highways

Highways define the region, and each has its own drainage crossings. Three U.S. highways pass through the center of Santa Anna: U.S. 283, U.S. 67 and U.S. 84. US 83 and US 277 stay together north of Abilene to about 2 miles north of Anson, where US 277 turns northeast and US 83 turns northwest, and the draws along those routes are crossed again and again by driveways, ranch roads and county roads.

We mobilize to Abilene projects and to towns along the US 83 and US 277 corridor. For highway rights-of-way, the state's permit process and design standards apply; for county and private roads, the owner sets the requirements.

Working in and near a draw

Creek bottoms are hazardous after rain. Breckenridge averages about 29.70 inches of precipitation a year (1991 to 2020 normals) and three tornadoes struck the town on April 9, 2008, a reminder that storms in this country can arrive fast and violently. We monitor forecasts, move equipment out of the channel when rain is expected and do not let crews work in a trench that could receive runoff.

Excavation near a road requires traffic control and, on live roads, a plan for detours or lane closures that the road owner approves. Trench protection is installed wherever depth requires it, with excavated soil piled a safe distance away. Before we set the pipe we divert any low flow around the work area with a temporary pump or a pipe.

Connected drainage work

Culverts are one piece of the drainage system and tie to storm drain installation in developed areas and to detention and retention ponds where flow is stored upstream. In rural settings, excavation and channel cleanup precede the crossing.

U.S. Route 84 leads about 52 miles northwest from Coleman to Abilene and about 30 miles southeast to Brownwood, and the drainage structures along such routes are regularly inspected and replaced by the state. We follow its specifications when we work in its right-of-way.

From existing pipe to new crossing

A replacement begins with a survey of the existing crossing and the channel profile, followed by temporary traffic control and flow diversion. The old pipe is removed, the bed is rebuilt and compacted, and the new pipe or box is laid to the design flowline with bedding and cover as specified. Headwalls and aprons follow, then backfill, base and pavement.

A new crossing starts with a design that matches the expected flow and a survey that fixes the invert elevations. We verify that the upstream and downstream channels can accept the water, and we raise problems before the pipe is bought. The pipe size on the plans is usually a minimum; the field often shows that the channel needs shaping to work with it.

What makes a crossing last

Three details matter most: the invert set to match the natural channel, the bedding and backfill compacted around the pipe in thin lifts and the scour protection at both ends. A culvert placed above the channel bed creates an upstream pool and a downstream drop, and sediment fills the barrel. A culvert placed too low collects silt from the first storm.

The Lawson oilfield, discovered just before World War II, lies six miles east of Haskell, and lease roads of that kind created many small crossings that were built quickly and never revisited. When we replace one, we size it for current flow, not for what the original builder assumed, and we put the as-built data in the closeout file for the road owner.

Walk the crossing with us

Send photos of the existing culvert or the plan sheet for the new crossing, and we will review the channel, outline the closure and propose the headwall and apron details. Contact us by form or phone.

Common Questions

How do we choose between a pipe and a box culvert?

The engineer sizes the opening for the design flow and the cover over it. Pipes suit smaller flows and deeper fills, while boxes handle wide, shallow openings. We price both when the design allows.

Can the road stay open during replacement?

Sometimes, by building the culvert in halves with a temporary lane, or by detouring traffic for a few days. We propose the least disruptive method the road owner allows.

What causes headwalls to fail?

Most failures come from scour under the toe, poor backfill compaction behind the wall or missing drainage. We detail cutoff walls, weep holes and compaction to prevent each.

How long does a culvert last?

Service life depends on the pipe material, the soil chemistry, the flow and how well the ends are protected. Reinforced concrete lasts longest in most conditions here, while metal can corrode in alkaline soils. We help owners compare life-cycle cost, not just the first price, and record the material and installation date in the closeout file.

Do culverts need permits?

On public roads and in regulated waterways, yes. Floodplain, state highway and county permits may apply, and we list the ones required in the preconstruction submittal.