In 2012, ODOT conducted a Road Safety Audit (RSA) of U.S. 20 at Granger Avenue and Independence Highway because the intersections are among the top 5% of the worst crash sites in the state. ODOT committed to studying these intersections to determine the best safety improvements to implement.
Each year, ODOT identifies its top 5% of high crash locations on state highways in Oregon. The ranking is known as the Safety Priority Index System, or SPIS.
The SPIS is a method of identifying locations where safety funds may be spent to provide the highest benefit. The SPIS is prioritized based on three years of crash data and considers crash frequency, crash rate and crash severity.
To learn more about SPIS, visit the website:
U.S. 20 at Independence Highway
conflict warning system was installed in August
2016 in response to the recommendation in the RSA. We will continue to monitor
the effectiveness of this system as it is one of the first installations in the
Region. For more information on this system, see the
U.S. 20 at Granger Avenue
We recently programmed funding through our
transportation investment program (STIP) for a project at U.S. 20 and Granger
Avenue. The current scope of work includes two key features: constructing a median
acceleration lane and creating a buffered right turn lane at the intersection.
The buffered turn lane is intended make it easier for vehicles turning left out of Granger Ave to see. The median
acceleration lane allows vehicles turning left from a side road to gain speed
and merge with main line traffic, helping drivers make safer left turns onto
the highway. Both of these features were recommended in the RSA. More information is available in the draft 2018-2021 STIP.