over the sidewalk “simply show[ed] the degree or quantity of use.” Id, at 691-92.
The present case strongly resembles the facts set out in Grapotte. Like the defendant’s vehicles driving over a public sidewalk' in Grapotte, the Appellees’ employees drove then- work-related vehicles on a public road. Id. at 691-92. As in Grapotte, the subsequent degradation of that road over time, by itself, does not give rise to a duty, even if the road becomes dangerous for other users, regardless of the number of vehicles driven on the road. See id. Here,- the roadway in question was a public roadway used by the public, including-Ap-pellees-and José. Yet,-as Grapotte explains, absent an exception, the duty to repair a public road remains with the governmental entity in control of that road. Id.
Based on Laura’s allegations, we take as true the allegation that Appellees’ work-related. vehicles were - “heavy and maybe overweight’ and Appellee’s drivers traveled at a high rate of speed on Krueger Road. We also take as true that Appellees’ acts ultimately damaged the roadway; and, it was the condition of the roadway that caused the cloud, of dust resulting in José’s accident and subsequent death. Laura’s petition; however, failed to allege how the Legislature’s “granting commissioners courts general, control over the roads,” imposed on Appellees “a duty to make the roadways safe for public,travel.” City of Boerne, 111 S.W.3d at 31-32;. see also Grapotte, 111 S.W.2d at 691-92.
Absent an allegation that La Salle County delegated its maintenance and repair functions to Appellees, or that Appellees gratuitously assumed those functions, Laura’s pleadings do not support the exisfenee of a legal duty, owed by Appellees, to maintain and repair Krueger Road. See Guerra v. Rodriguez, 239 S.W.2d- 915, 917 (Tex.Civ.App.-San Antonio 1951, no writ) (recognizing that county commissioners may delegate road repair functions); see also Fort Bend Cty. Drainage Dist. v. Sbrusch, 818 S.W.2d 392, 396 (Tex.1991) ([O]ne who assumes to act, even though gratuitously, may thereby become subject to the duty of acting carefully, if he acts at all.”) (citing Glanzer v. Shepard, 233 N.Y. 236, 135 N.E. 275, 276 (1922)). To hold Appellees owed a duty to José, simply because La Salle County did not repair Krueger Road fast enough, would create a duty that does not exist. See Villegas, 120 S.W.3d at 39. Although we are obligated under Rule 91a to take Laura’s factual allegations as true, we nevertheless conclude that- Laura’s pleadings fail to show a basis in law that Appellees owed a duty to José, or any other individual on the roadway, to repair Krueger Road.
Having found Appellees owed no legal duty to repair Krueger Road, we next turn to whether Appellees had a duty to warn José regarding a potentially dangerous condition on Krueger Road.
2. Duty to Warn of a Dangerous Condition
In Buchanan v. Rose, 159 S.W.2d at 109, the Texas Supreme Court addressed whether a driver traveling over a bridge that “ha[d] broken down under the weight of his vehicle, without negligence on his part,” had a duty to warn, other drivers in an attempt to prevent other drivers’ injuries. The court’s analysis was based on the concession.that the defendant was not negligent in the damage caused to the bridge. Id.
Laura correctly points to Buchanan for the general proposition that when someone acts without negligence and creates a dangerous situation, that person must give warning of the danger, Id. at 109-10. We note, however, the Buchanan Court was careful to limit the applicability of its opin