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The highway has faced repeated problems since the 2003 Willow Fire that has made the one-lane unpaved trail portion (approximately between
Postmile 7.5 and Postmile 11.5) unsafe for passage from erosion and storm damage. Since March 2011, the one-lane trail portion of SR 173 has been permanently
478:
Before 1964, Route 173 was part of
California Legislative Route 59; however, like a small number of other California State highways, it was not signed. From 1934 to the mid-1950s the part of Route 59 that is now Route 173 was designated by the California Division of Highways to be a segment of
507:, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (
491:
closed to through traffic. While roadway preservation maintenance (basic grading, debris clearance) is still done, this decision effectively ends all further interest to upgrade the segment to a 2-lane passable highway through state-funded projects.
479:
California sign route 2; however, signing did not occur. From the mid-1950s through July 1964, the
Division of Highways changed the routing of future sign route 2 from the subject segment of Route 59 to Legislative Route 188, the segment of present
857:
1012:
411:
area. This one-lane dirt segment has been closed to traffic since March 2011. The paved segment of SR 173 resumes northeast of Lake
Arrowhead and enters the community of
340:
313:
963:
214:
209:
407:, it turns into a one-lane dirt road rising along the north face of the San Bernardino Mountains, first heading east to its apex before turning south to the
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395:, several houses and ranches, and the historic Las Flores Ranch site. The road briefly turns north further into the Hesperia city limits, leaving the
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514:). Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in
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between the junction of Routes 138 and 173 and Mount
Anderson Junction, the junction of Routes 18 and 138 south of
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shoreline and encounters
Papoose Lake. The highway enters the community of Lake Arrowhead, where SR 173 intersects
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segment, which is a one-lane jeep trail on the northwestern face of the San
Bernardino Mountains directly east of
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352:
328:. The route starts at the Mojave River Forks, skims the easterly and southerly sides of Lake Arrowhead and meets
119:
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434:, a network of highways that are considered essential to the country's economy, defense, and mobility by the
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347:. Since March 2011, this one-lane unpaved segment of SR 173 has been closed. Through traffic should use
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39:
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The eastern point along SR 173 where the pavement ends and the unpaved segment heads west
474:
The western barrier along SR 173 where the closed unpaved segment begins and heads east
44:
Map of San
Bernardino County in southern California with SR 173 highlighted in red
1001:
356:
355:. An alternate route from Hesperia to Lake Arrowhead would involve heading south on
285:
142:
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420:
380:
470:
424:
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992:
25:
332:, Lake's Edge Road, at the south entrance to the Lake Arrowhead Village.
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819:(Map). Scale not given. Washington, DC: Federal Highway Administration.
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458:
The barrier at the eastern end of the closed unpaved segment of SR 173
830:
Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012).
736:. Sacramento: California Department of Transportation. Archived from
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885:"Officially Designated State Scenic Highways and Historic Parkways"
469:
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453:
442:, but it is not officially designated as a scenic highway by the
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610:
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675:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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371:
to reach the southern terminus of SR 18 at
Waterman Road.
511:
California postmile § Official postmile definitions
950:
945:
883:
California
Department of Transportation (August 2019).
913:. Sacramento: California Department of Transportation.
864:. Sacramento: California Office of Legislative Counsel
909:
California Department of Transportation (July 2007).
890:. Sacramento: California Department of Transportation
772:"State Route 173 (Unpaved Portion) Permanent Closure"
172:
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973:Caltrans: State Route 173 highway conditions
810:Federal Highway Administration (March 25, 2015).
964:Template:Attached KML/California State Route 173
838:. Washington, DC: Federal Highway Administration
335:It is the only California state highway with an
387:city limits and travels east near the shore of
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8:
983:California Highway Patrol Traffic Incidents
813:National Highway System: California (South)
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1013:Roads in San Bernardino County, California
520:
438:. SR 173 is eligible for inclusion in the
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74:The one-lane, unpaved segment between the
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732:California Department of Transportation.
858:"Article 2.5 of Chapter 2 of Division 1"
924:California Department of Transportation
719:
503:were measured on the road as it was in
444:California Department of Transportation
988:California @ AARoads - State Route 173
862:California Streets & Highways Code
832:"What is the National Highway System?"
18:
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589:
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499:Except where prefixed with a letter,
7:
399:. SR 173 leaves the city and enters
66:24.944 mi (40.143 km)
405:Pacific Crest National Scenic Trail
911:"Log of Bridges on State Highways"
14:
611:One-lane, unpaved segment, closed
509:for a full list of prefixes, see
797:San Bernardino County Road Atlas
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624:
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423:and turns south to terminate at
401:Mojave River Forks Regional Park
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978:Caltrans Traffic Conditions Map
436:Federal Highway Administration
397:San Bernardino National Forest
302:San Bernardino National Forest
1:
799:(Map). Thomas Brothers. 2008.
1008:State highways in California
182:State highways in California
993:California Highways: SR 173
928:All Traffic Volumes on CSHS
709:California Roads portal
593:Arrowhead Lake Road –
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440:State Scenic Highway System
1039:
430:SR 173 is not part of the
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78:and a point northeast of
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1018:San Bernardino Mountains
734:"State Truck Route List"
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836:National Highway System
432:National Highway System
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296:that runs entirely in
82:is closed indefinitely
777:. CalTrans District 8
516:San Bernardino County
473:
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320:. Its east end is at
308:near the west end of
304:. Its west end is at
298:San Bernardino County
16:Highway in California
1023:Hesperia, California
968:KML is from Wikidata
747:on September 5, 2015
495:Major intersections
76:Pacific Crest Trail
670:East end of SR 173
582:West end of SR 173
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468:
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393:Cedar Springs Dam
379:SR 173 begins at
375:Route description
359:, then south on
343:and northwest of
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306:State Route 138
278:State Route 173
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322:State Route 18
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779:. Retrieved
749:. Retrieved
738:the original
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531:Destinations
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71:Restrictions
868:February 6,
781:18 December
630:SR 189
566:SR 138
265:SR 174
250:SR 172
101:SR 138
1002:Categories
715:References
654:SR 18
413:Cedar Glen
294:California
290:U.S. state
190:Interstate
153:California
120:SR 18
578:Crestline
501:postmiles
485:Crestline
324:south of
316:south of
946:KML file
751:June 30,
743:XLS file
696:See also
656: –
634:Blue Jay
632: –
595:Hesperia
572: –
540:Hesperia
527:Postmile
524:Location
385:Hesperia
345:Blue Jay
318:Hesperia
284:) is a
230:Freeways
159:Counties
134:Location
105:Hesperia
57:Caltrans
842:July 1,
642:
603:
587:
450:History
337:unpaved
312:in the
288:in the
225:Deleted
210:History
139:Country
888:(XLSX)
606:L7.75–
421:SR 189
381:SR 138
365:SR 210
349:SR 138
282:SR 173
205:Scenic
63:Length
817:(PDF)
775:(PDF)
645:23.04
621:21.46
608:10.90
590:L6.99
544:L0.00
534:Notes
425:SR 18
361:I-215
353:SR 18
200:State
149:State
122:near
955:help
951:edit
896:2017
870:2019
844:2012
783:2012
753:2015
570:I-15
505:1964
357:I-15
351:and
568:to
367:in
292:of
103:in
1004::
953:•
926:,
860:.
834:.
761:^
722:^
664:,
660:,
576:,
518:.
487:.
446:.
427:.
257:→
242:←
195:US
957:)
949:(
898:.
872:.
846:.
785:.
755:.
745:)
741:(
280:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
