Network Development

Delivering the Full Statewide Middle-Mile Network

The Delivery Methods Interactive Network Map visualizes the routes that are planned, in development, under Caltrans-led construction, leased, or purchased. As you explore the map and click on a segment of the network, the route will highlight all contract partners by name and the length of the route. The map shows all partners representing all delivery types, including lease, purchase, joint build, or Caltrans-led construction. In addition to the highlight, a pop-up box will appear displaying additional information about the segment, including the route miles by partner.

The route map will be updated the last Monday of every month. Only changes of one-half mile or more will be reflected.  View the changes on the Map Update Log page.

Network Miles by County and Delivery Method

Table Description:

• County Name: Location of the network.
• Lease Miles: Miles of infrastructure leased.
• Purchase Miles: Miles of infrastructure purchased.
• Joint Build Miles: Miles built in collaboration with a partner.
• Caltrans Construction Miles: Miles built by the State of California.
• Total Miles: Total network miles for county.

County Name	Lease Miles	Purchase Miles	Joint Build Miles	Caltrans Construction Miles	Total Miles
Alameda	55.8	0	32.4	20.6	108.8
Alpine	41.0	0	0	2.5	43.5
Amador	104.2	0	0.6	0	104.8
Butte	85.4	0	27.5	0	112.9
Calaveras	99.1	0	5.0	0	104.1
Colusa	2.6	0	40.7	0	43.3
Contra Costa	13.4	0	80.2	0	93.6
Del Norte	49.4	0	18.4	0	67.8
El Dorado	54.7	0	33.3	32.1	120.1
Fresno	228.1	0	62.3	0	290.4
Glenn	7.8	0	36.8	4.6	49.2
Humboldt	76.3	0	176.4	0	252.7
Imperial	55.7	0	173.1	0	228.8
Inyo	0	147.2	0	0	147.2
Kern	304.6	31.5	116.4	0	452.5
Kings	103.1	0	29.3	0	132.4
Lake	0	0	83.8	5.9	89.7
Lassen	25.7	0	172.2	0	197.9
Los Angeles	105.2	0	302.9	15.6	423.7
Madera	62.6	0	28.9	0	91.5
Marin	0	0	40.6	0	40.6
Mariposa	59.4	0	31.1	0	90.5
Mendocino	0	0	238.9	10.6	249.5
Merced	86.0	0	44.2	0	130.2
Modoc	111.8	0	61.4	0	173.2
Mono	7.5	175.4	5.0	0	187.9
Monterey	150.3	0	1.2	0	151.5
Napa	11.8	0	6.0	0	17.8
Nevada	45.9	0	26.4	8.2	80.5
Orange	0	0	95.0	0	95.0
Placer	24.3	0	78.7	17.8	120.8
Plumas	0	0	32.7	23.4	56.1
Riverside	143.2	0	94.1	17.7	255.0
Sacramento	34.8	0	117.5	5.0	157.3
San Benito	99.8	0	0.2	0	100.0
San Bernardino	17.9	69.0	498.4	0	585.3
San Diego	0	0	129.4	60.8	190.2
San Francisco	15.7	0	0	3.2	18.9
San Joaquin	112.2	0	63.0	0	175.2
San Luis Obispo	132.8	0	20.3	0	153.1
San Mateo	34.0	0	0	0	34.0
Santa Barbara	184.7	0	4.1	0	188.8
Santa Clara	67.9	0	43.6	0	111.5
Santa Cruz	7.3	0	2.8	0	10.1
Shasta	128.0	0	18.5	7.9	154.4
Sierra	0	0	3.1	29.7	32.8
Siskiyou	82.8	0	210.1	0	292.9
Solano	17.7	0	43.0	0	60.7
Sonoma	0	0	128.6	0	128.6
Stanislaus	100.9	0	25.0	0	125.9
Sutter	68.9	0	0.1	0	69.0
Tehama	28.8	0	106.8	0	135.6
Trinity	72.5	0	0	0	72.5
Tulare	234.5	0	22.2	0	256.7
Tuolumne	39.2	0	42.1	0	81.3
Ventura	64.6	0	35.4	0	100.0
Yolo	42.0	0	53.3	1.1	96.4
Yuba	50.4	0	0	0	50.4
Grand Total Miles	3,752.3	423.1	3,743.0	266.7	8,185.1

Updated October 27, 2025