Business Loop I-10 - Colton and Fontana
Beginning east of Interstate 15, Business Loop I-10 follows Valley Boulevard along the former route of U.S. 70/99 through Colton between Exit 59 (Etiwanda Avenue / Valley Boulevard / Commerce Drive) and Exit 71 (Mount Vernon Avenue). The business route was not listed in the 1991 state signing log, and no signs for the designation were posted on the Interstate 10 mainline.
Remnant signs, especially in the city of Colton, were still posted along Valley Boulevard as of 2008. Remnant signs were harder to find west of there toward Fontana.
East
Valley Boulevard east intersects Rancho Avenue in Colton just north of the diamond interchange along Interstate 10 at Exit 70 A. This button copy sign was replaced in kind by 2019.
07/15/07
Lush landscaping lines both the parkway strip and median of Valley Boulevard beside Colton High School. Valley Boulevard is former U.S. 70-99 in Colton.
07/15/07
Eastbound Valley Boulevard (Business Loop I-10) meets Third Street at this intersection.
07/15/07
Still in place as of 2025, a remaining Business Loop I-10 reassurance shield is posted on eastbound Valley Boulevard at 4th Street in Colton.
07/15/07
Eastbound Valley Boulevard (Business Loop I-10) meets La Cadena Drive at this traffic signal.
07/15/07
Another Business Loop I-10 on eastbound Valley Boulevard (old U.S. 70-99) precedes Ninth Street.
07/15/07
Changes made by 2011 along Valley Boulevard between 9th Street and Mount Vernon Avenue included replacing the center turn lane with a landscaped median.
07/15/07
Business Loop I-10 eastbound retured to I-10 via Mount Vernon Avenue south. The remainder of Valley Boulevard east serves local traffic, though the business route westbound uses the stretch from the off-ramp to Sperry Drive.
07/15/07
The westbound entrance ramp for I-10 departs from Mount Vernon Avenue to the immediate south of Valley Boulevard (Business Loop I-10). The eastbound on-ramp follows from Mount Vernon Avenue at Mission Street.
07/15/07
Valley Boulevard reduces to two lanes east from Mount Vernon Avenue to Sperry Drive north.
07/15/07
Business Loop I-10 effectively ended here at the point where Valley Boulevard east becomes Sperry Drive north. The business loop westbound began here from the Sperry Drive exit ramp.
07/15/07
Photo Credits:
- Andy Field: 07/15/07
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Page Updated Thursday March 14, 2013.