Former State Route 18 Business - San Bernardino
The designation of State Route 18 Business in San Bernardino was the result of the prior designation of SR 259 as part of SR 18. Prior to 1964, SR 18 was defined to follow the Riverside Freeway corridor (Interstate 215 south and SR 91 west) toward Orange County and ultimately Long Beach. That state route was truncated to the interchange with SR 210, but the business route remained signed until 2009 as far south as the Highland Avenue interchange along SR 259.
SR 18 Business combined with SR 30 Business along Highland Avenue east from the freeway along SR 259 to Sierra Way. The bannered route followed Sierra Way north to 48th Street, which returned SR 18 Business to SR 18 along Waterman Avenue.
East
An SR 30 trailblazer was previously posted beyond the entrance ramp to SR 259 northbound.
05/02/02
Removed by 2011, this SR 18 Business marker was posted along Highland Avenue eastbound after the exchange with SR 259.
07/15/07
The former confirming marker for SR 18 Business posted east of SR 259 in San Bernardino. Highland Avenue was also once part of SR 30 Business.
05/02/02
Highland Avenue (old SR 18-30 Business) east meets G Street at this traffic signal. A middle school is located on the north side of Highland Avenue beyond this intersection.
07/15/07
A business banner without shields for SR 18 or SR 30 appeared on this street light pole after G Street.
07/15/07
Highland Avenue east at E Street, which is former SR 206. E Street leads north to Kendall Drive, which angles northwest past Shandin Hills to eventually meet I-215 along what was U.S. 66 Business. SR 206 was the designation of the route after the U.S. designation was removed, but before the state transferred maintenance to the city. Southward, H Street heads into Downtown San Bernardino.
07/15/07
Highland Avenue advances east to the traffic signal at D Street.
07/15/07
The next traffic signal along eastbound Highland Avenue is at Arrowhead Avenue.
07/15/07
Former SR 18-30 Business (Highland Avenue) east at Mountain View Avenue in San Bernardino.
07/15/07
SR 18 Business north separated from SR 30 Business (Highland Avenue) east at Sierra Way, the succeeding traffic light beyond Mountain View Avenue.
07/15/07
Old, faded shields for the business routes posted just prior to the Sierra Way intersection.
07/15/07
North
SR 18 Business followed Sierra Way north. However, the best route to SR 18 north was continuing east on Highland Avenue to Waterman Avenue north.
07/15/07
Residences, not businesses, line both sides of Sierra Way between 27th Street and SR 210.
07/15/07
Sierra Way crosses over the freeway along SR 210 without direct access.
07/15/07
Removed after 2011, this badly faded and graffiti covered SR 18 Business shield was posted along northbound Sierra Way at 30th Street.
07/15/07
Northbound Sierra Way meets Marshall Boulevard at this traffic signal.
07/15/07
Sierra Way north at Parkdale Drive.
07/15/07
Sierra Way enters a business district north at Ralston Avenue.
07/15/07
Northbound Sierra Way meets 40th Street at this traffic signal.
07/15/07
Sierra Way curves northeast toward SR 18 (Waterman Avenue) beyond 44th Street.
07/15/07
Sierra Way northbound at 45th Street east.
07/15/07
SR 18 Business turned east from Sierra Way north along 48th Street. Sierra Way dead ends north of the six-point intersection with Leroy Street and 49th Street without access to SR 18. The SR 18 trailblazer here was removed by 2023.
07/15/07
SR 18 Business followed 48th Street east for two tenths of a mile between Sierra Way and Waterman Avenue.
07/15/07
The former north end of SR 18 Business at SR 18 (Waterman Avenue). SR 18 travels north from San Bernardino to mountain resorts. The SR 18 shield was removed by 2011.
07/15/07
West
SR 18 Business ended west along Highland Avenue at the diamond interchange with SR 259. SR 30 Business formerly continued west to SR 210 at Exit 28. Dating from the 1960s, this overhead does not have any button copy.
05/02/02
SR 259 is a connector between I-215 north and SR 210 east and from SR 210 west to I-215 south. The exchange joining I-215 with I-10 (San Bernardino Freeway) is five miles to the south.
07/15/07
Photo Credits:
- Andy Field: 05/02/02, 07/15/07
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Page Updated Tuesday July 15, 2025.