In the recent survey of civic priorities, respondents most mentioned topic not covered by existing LCCO plans was Safety & Security. Lost Creek Blvd. was cited as a specific concern.
The last traffic data I have on Lost Creek Blvd. was taken in the summer of 2013, not during the school year when traffic is considerably heavier. Traffic count and speed was measured at two points along the boulevard - Mauna Kea and between Arronimink and Wilson Heights - over a 24 hour period. At Arronimink and Wilson Heights, 26% of the daily traffic of 8,573 exceeded 35 mph, and at Mauna Kea, 14% of the daily traffic of 2,335 exceeded 35 mph (3 cars were clocked at speeds between 65 and 70 mph).
The comparison of average annual traffic counts for intersections with Loop 360 is shown in the graphic below. In 2005, Lost Creek Blvd. has the second highest traffic at the intersection.
Residents of Lost Creek feel that the traffic on the boulevard is much higher than indicated by these old data, and that people are driving faster.
The advent of GPS enabled driving assistants is directing more traffic through Lost Creek. The boulevard was never intended to be a thoroughfare. This behavior is clearly observable.
Not only is the through traffic composed of cars, but delivery and repair trucks as well. I personally have observed two instances of tanker trucks carrying flammable liquids through the neighborhood.
There are two EISD elementary schools across Loop 360 from the boulevard. Creating a safe passage for kids is a concern of residents as well. Sidewalks are not completed over Loop 360 and to the schools, and the boulevard does not have a complete set of sidewalks along it on both sides.
To complicate matters, the boulevard is listed as one of Austin's bicycle paths (map below). The boulevard is not marked for bicycles, nor is parking defined.
At the intersection of Lost Creek Blvd. and Barton Creek, there are additional problems. This area has become an unofficial access to Austin's Barton Creek Wilderness Area. The low water bridge is the only access for EMS, police and firefighters vehicles. The City does not own any land around this unofficial access point. The land is owned by individuals and the Lost Creek Limited District. Parking limits access to the trails by emergency vehicles, creates a nuisance for neighbors and facilitates poor behavior by visitors.
In case of a wildfire threatening Lost Creek, the boulevard is the primary way for evacuation. And, it is the only way for emergency vehicles to serve Lost Creek.