Above is a list of highway and transit projects and programs that would receive funding from the Measure M sales tax ballot measure. The list includes groundbreaking dates and project completion dates. The ballot measure would raise the countywide sales tax by a half cent and continue the Measure R half-cent sales tax beyond its mid-2039 expiration date to fund a number of highway, transit, local street, walking and biking programs.

And below are brief descriptions of the projects. One note: the final version of some of these projects are still to be determined by environmental studies. Many of the highway projects will be done in conjunction with Caltrans, the state agency that oversees highways.

I-5 Truck and Carpool Lane Additions: SR-14 Interchange to Lake Hughes Road. Adds one truck lane and one carpool lane in each direction, while maintaining existing general purpose lanes. Project home page.

SR-71 Lane Additions: I-10 to Rio Rancho Rd Adds three additional miles of SR-71 general purpose lanes in each direction, providing three continuous lanes in each direction to eliminate bottlenecks and improve traffic flow in sections where only two lanes exist today.

SR-57/SR-60 Interchange Improvements: Two miles of freeway, on-ramp, auxiliary lane, and street widening improvements in the vicinity of Grand Avenue and Golden Springs Drive.

I-105 ExpressLane Additions: I-405 to I-605 Creates two additional ExpressLanes, totaling 16 miles, while maintaining current general purpose lanes in each direction.

Sepulveda Pass Express Bus Transit Corridor: Adds two ExpressLanes in each direction along the I-405 from I-10 to US-101, while maintaining current general purpose lanes, to provide express bus service connecting the San Fernando Valley to Westwood.

I-710 South Corridor Zero Emission Truck Lane Additions: Long Beach to Commerce Adds two Zero-Emission truck lanes in each direction, for a total of 18 miles, while maintaining current general purpose lanes. The project includes improvements to the Shoemaker Bridge. Project home page.

I-605/I-10 Interchange Improvements: Interchange improvements in all directions (north, south, east and west).

I-5 South Corridor Lane Additions: I-605 to I-710 Adds one general purpose lane and one carpool lane in each direction, for a total of seven miles. When complete, there will be a total of five general purpose lanes and one carpool lane in each direction.

I-405 South Bay Curve Bottleneck Improvements: Adds segments of auxiliary lanes in each direction to improve traffic flow at on-/off-ramps for ten miles from Florence Av to I-110.

I-110 ExpressLanes Extension to I-405/I-110 Interchange: Extends the existing I-110 ExpressLanes southward one mile to I-405, while maintaining current general purpose lanes.

SR-60/I-605 Carpool Interchange Improvements: Improves interchanges from I-605 Rose Hills to I-10 and SR-60 from Santa Anita to Turnbull Canyon. Includes: new auxiliary lanes, wider lanes and bridges, interchange connectors, and ramp improvements.

I-405/I-110 ExpressLane Interchange Improvements: Provides ramps that directly connect the ExpressLanes on the I-110 and I-405.

High Desert Multi-Purpose Corridor: SR-14 to SR-18 Builds the Los Angeles County portion of a new freeway and toll lanes with parallel rail/transit service and a bikeway to connect cities in the Antelope and Victor Valleys, including Palmdale and Lancaster. Project home page.

Las Virgenes/Malibu Transportation Improvements: Various local street improvements to eliminate bottlenecks and improve traffic flow to/from adjacent freeways/major highways (i.e. 101, PCH) and connections to local communities.

North County Transportation Improvements: Various street improvements, including street and bridge widenings, to eliminate bottlenecks and improve traffic flow to/from adjacent freeways/highways (i.e. 138, 14) and connections to local communities. Also includes local transit projects, such as improved Metrolink Commuter Rail stations, rail crossings, and enhanced bus service.

I-605 Corridor “Hot Spot” Interchange Improvements: Improvements to various interchanges along the I-605 freeway to eliminate bottlenecks and improve traffic flow at on-/off-ramps from the Orange County Line to the SR-60 Freeway. Project home page.