Note: General information on the Top 20 intersections, with criteria, list, and map, is available in post 1. Other posts on Top 20 intersections are available at Tag: Top 20 Intersections.

I am looking more closely at the Top 20 intersections identified in the City of Sacramento Vision Zero Action Plan Update. Intersection 11 is Mack Rd & La Mancha Way & Valley Hi Dr. La Mancha Way is to the north of Mack Road, and Valley Hi Drive is to the south of Mack Road.

Design

Lanes: Mack Road is six lanes west of the intersection (two through, one left turn, one right turn, and two opposite), and seven lanes to the east of the intersection (two through, two left turn, one right turn, and two opposite). La Mancha Way is six lanes (one through, two left turn, one right turn, and two opposite). Valley Hi Drive is eight lanes (one through, two left, one right/through, one right, and three opposite). Total lane count is 27.

Medians: Concrete medians are present on all four legs of the intersection.

Crosswalks: Crosswalks are present on all intersection legs, however, they are low-visibility parallel lines.

Bicycle Facilities: Mack Road has Class 2 bike lanes, with some green paint but no protection. La Mancha Way has fragments of Class 2 bike lanes with many gaps, and no green paint or protection. Valley Hi Drive has no bike facilities at all.

Speed: Mack Road has a posted speed limit of 45 mph (!). La Mancha Way has a posted speed limit of 40 mph. Valley Hi Drive has a posted speed limit of 35 mph. The proximity of Hwy 99 directly to the east undoubtable increases actual speeds over what would normally be found on these roadways.

The city no longer has a database or map of speed limits, so it is often necessary to look in Google Maps Street View for speed limit signs. The county (and SACOG) have a database, but it does not include the City of Sacramento roadways.

Transit: The intersection area is served by SacRT routes 56 Meadowview, 67 Franklin, and 68 Oak Park.

Crashes

In the 2015 to 2024 period (which is used in the Vision Zero Action Plan Update), there were five severe injuries at this intersection, two with pedestrians and three with motor vehicles. These are mapped below (pdf).

The orange dots are severe injuries (one contains three crashes); the red dots are fatal (none). Together, these are know as KSI = killed or severe injury. ‘Other visible injury’ and ‘complaint of pain’ crashes are not shown on my map, since these are not the focus of Vision Zero, however, there are several of these along Mack Road and Valley Hi Drive, which you may view in the Crash Dashboard Interactive Map.

Please note that the exact crash locations may not be accurate, as police reports often do not correctly locate crashes. Also note that ‘pedestrian violation’ entry may be false, as police often blame crashes on the person walking when actual responsibility is not clear, or the pedestrian is dead and can’t counter the driver story.

The crash details, available in the Vision Zero Crash Dashboard Interactive Map, are below.