City officials say Interstate 25 could be closed during Barack Obama's planned acceptance speech at Invesco Field at Mile High.

Officials planning security measures for the Aug. 28 event that caps the Democratic National Convention say no decision has been made. Mayor spokeswoman Sue Cobb says any closure would take into consideration the impact to commuters and the city would try to minimize any inconveniences.

On Wednesday, the city announced it would close Speer Boulevard and Auraria Parkway, along with the light rail near the Pepsi Center while convention events are held there Aug. 25-27.