Interstate 15 southbound leaves the U.S. 395 southern terminal and next interchanges with Oak Hill Road. Oak Hill Road flows northward to Ranchero Road in Hesperia. The diamond interchange otherwise ties into the parallel frontage roads of Caliente and Mariposa Roads. Photo taken 10/19/04.
Exit 138 departs Interstate 15 southbound at Oak Hill Road. Caliente Road stems west into the Baldy Mesa area and San Bernardino National Forest. Mariposa Road continues south from Oak Hill Road to Forestry Road within the National Forest east of the freeway. The freeway climbs southward to Cajon Summit. taken 10/19/04.
Now south of Victorville and Hesperia, this suite of photos shows the route of Interstate 15 southbound from Cajon Pass as it descends from Cajon Pass. Photos taken 01/21/02.
Southbound Interstate 15 approaches Exit 131, California 138. California 138 was originally proposed as a freeway between Interstate 5 and Interstate 15 to be known as the Metropolitan Bypass. This proposal was dropped years ago, and it seems unlikely to be resurrected at this time. California 138 roughly follows the San Andreas fault. Photo taken 01/21/02.
At the end of the exit ramp from southbound Interstate 15 to California 138 is this exit ramp. A left turn follows California 138 east over the Cajon Pass to Silverwood Lake, Enchanted Forest, and Junction California 18 at Crestline. Photo taken 04/18/04.
Winding down from the Cajon Summit, Interstate 15 approaches it first freeway interchange since Barstow at Exit 123, Junction Interstate 215 south to San Bernardino and Riverside. This odd guide sign makes the interchange appear like the southbound freeway ends at a T-intersection, but it is much gentler than that! Photo taken 06/27/04.
The second guide sign for the pending Interstate 215 interchange is much more illustrative of the interchange, as the freeway will split, with Interstate 215 following the left lanes and Interstate 15 taking the right lanes. Photo taken 06/27/04.
Interstate 15 widens into six lanes, with the three left lanes heading toward Interstate 215 and the three right lanes heading toward Interstate 15 south. Interstate 215 follows old U.S. 66-91-395 south through downtown San Bernardino, then heads south to Colton, Riverside, Moreno Valley, Perris, Sun City, Murrieta, and Temecula. Photo taken 06/27/04.
At this point, Interstate 15 and Interstate 215 split. Through traffic en route to San Diego, Corona, Los Angeles (via California 210, Interstate 10, or California 60), or Orange County (via California 91) is best served by Interstate 15. An archaic interchange between Interstate 215/California 60/California 91 in Riverside (it is a cloverleaf!) generally causes daily traffic delays, and a construction project to reconfigure the interchange will likely result in further delays during the short-term. Photo taken 06/27/04.
Interstate 15 departs from Interstate 215 and angles southwest as it approaches the next several exits: Exit 116, Summit Avenue; Exits 115B-A, Junction California 210/Foothill Freeway; and Exit 113, Base Line Road/Base Line Avenue. Photo taken 06/27/04.
California 210, the next exit after Summit Avenue, is the next freeway-to-freeway interchange along southbound Interstate 15. A fairly new freeway, California 210 provides an alternative to Interstate 10 between Fontana and San Dimas. The only remaining unconstructed segment is the section through Rialto (Sierra Avenue) and Muscoy (Junction Interstate 215). Old California 30 acts as a temporary route to connect California 210 with the existing California 30 freeway around San Bernardino. Photo taken 06/27/04.
These California 210 reflective shields overlay the original button copy California 30 shields that were placed on these signs originally. When the decision was made in 1999 to renumber the Foothill Freeway as California 210 (with hopes for a future redesignation as Interstate 210), California 30 was hastily removed from some signs along the stretch completed in 2001 just east and west of Interstate 15 (between Dry Creek Boulevard and Sierra Avenue). Photo taken 06/27/04.
Southbound Interstate 15 reaches Exit 115B, Junction California 210/Foothill Freeway east to San Bernardino. Notice that local traffic is advised for the route, even though the highway connects to that city via old California 30/Highland Avenue. Photo taken 06/27/04.
The second ramp in the California 210 interchange connects southbound Interstate 15 with westbound California 210/Foothill Freeway to Rancho Cucamonga, Upland, Claremont, La Verne, and San Dimas. The freeway then meets California 57, where California 210 converts into Interstate 210, and the Interstate continues west to Pasadena and ultimately Sylmar (Junction Interstate 5). Photo taken 06/27/04.
This mileage sign provides the distance to the next three exits after California 210: Exit 113, Base Line Road/Base Line Avenue; Exit 112, Junction California 66/Foothill Boulevard (Historic U.S. 66); and Exit 110, Fourth Street. Photo taken 06/27/04.
Although it is signed only as "Base Line," the next exit along southbound (Exit 113) serves Base Line Road west through Rancho Cucamonga to Upland and Claremont. It also serves Base Line Avenue east into Fontana and Rialto. By the time it enters the city of San Bernardino, it becomes Base Line Street. Photo taken 06/27/04.
Southbound Interstate 15 reaches Exit 113, Base Line Road/Base Line Avenue. Photo taken 06/27/04.
The next exit along southbound Interstate 15 is Exit 112, Junction California 66/Foothill Boulevard, one mile. Photo taken 06/27/04.
This mileage sign provides the distance to the next three exits: Exit 112, Junction California 66/Foothill Boulevard (Historic U.S. 66); Exit 110, Fourth Street; and Exits 109B-A, Junction Interstate 10/San Bernardino Freeway. Photo taken 06/27/04.
Southbound Interstate 15 reaches Exit 112, Junction California 66/Foothill Boulevard. California 66 is one of the few state-maintained segments of Old U.S. 66 that are left in the Los Angeles Basin. With the recent resurgence of U.S. 66 in the popular culture, U.S. 66 shields greatly outnumber California 66 shields through Rancho Cucamonga and Upland. U.S. 66 used to follow Foothill Boulevard east to San Bernardino via Fontana and Rialto, then joined U.S. 91-395 north (Interstate 215 today) north toward Cajon Summit. Photo taken 06/27/04.
This mileage sign provides the distance to the next three exits along southbound Interstate 15: Exit 110, Fourth Street; Exits 109B-A, Junction Interstate 10/San Bernardino Freeway; and Exit 108, Jurupa Street. Photo taken 06/27/04.
The next exit along southbound is Exit 110, Fourth Street west into Rancho Cucamonga and San Bernardino Avenue east to Fontana and Bloomington. Photo taken 06/27/04.
Southbound Interstate 15 reaches Exit 110, Fourth Street. The next interchange is Exits 109B-A, Junction Interstate 10/San Bernardino Freeway. Interstate 15 departs Rancho Cucamonga and enters Ontario. Photo taken 06/27/04.
Interstate 10/San Bernardino Freeway heads east to Colton, Palm Springs, Indio, and Phoenix. It travels west through Ontario, Montclair, and Pomona en route to Los Angeles County. This interchange marks the connection between two major, transcontinental freeways. Photo taken 06/27/04.
The first exit from southbound Interstate 15 connects to eastbound Interstate 10 to San Bernardino and Indio (Exit 109B) followed by the ramp to westbound Interstate 10 to Los Angeles and Santa Monica. Photo taken 06/27/04.
This picture shows southbound Interstate 15 as it reaches Exit 109A, Junction Interstate 10 west to Los Angeles. The next exit is Exit 108, Jurupa Street. Photo taken 06/27/04.
After the Jurupa Street interchange (Exit 108), the following exit is Exit 106, Junction California 60/Pomona Freeway (two miles). Photo taken 06/27/04.
This mileage sign provides the distance to Norco, Corona, and San Diego. Photo taken 06/27/04.
Southbound Interstate 15 reaches Exit 108, Jurupa Street. Jurupa Street is an east-west street that connects Ontario with the southern reaches of Fontana and Crestmore. Photo taken 06/27/04.
The next exit along southbound is Exit 106, Junction California 60/Pomona Freeway east to Riverside and west to Los Angeles. This sign dates back to when the Interstate 15 freeway was constructed, and it has always omitted the California 60 shield. Photo taken 06/27/04.
Prior to reaching the interchange with California 60, southbound Interstate 15 departs San Bernardino County and enters Riverside County. Photo taken 06/27/04.
