SR 173
    [IN THE SOUTHERN CALIFORNIA AREA]
    IS CLOSED FROM 2 MI EAST OF HESPERIA /AT LAKE ARROWHEAD RD/ TO 8.6 MI WEST 
OF THE JCT OF SR 189 /AT RIFLE RANGE RD/ (SAN BERNARDINO CO) 24 HRS A DAY 
7 DAYS A WEEK - DUE TO SAFETY CONCERNS - MOTORISTS ARE ADVISED TO USE AN 
ALTERNATE ROUTE