Interstate 680

Interstate 680 may refer to:

Interstate 680 (California)

Interstate 680 (I-680) is a north–south Interstate Highway in Northern California. It curves around the eastern cities of the San Francisco Bay Area from San Jose to Interstate 80 at Fairfield, bypassing cities along the eastern shore of San Francisco Bay such as Oakland and Richmond while serving others more inland such as Pleasanton and Concord.

Built in the 1920s and designated in 1955, I-680 begins at a junction with I-280 and US 101 (Bayshore Freeway), and heads northeast and north-northwest through the northeast part of San Jose. After passing SR 237 in Milpitas and SR 262 in Fremont, I-680 abruptly turns northeast (where a connection to a SR 238 freeway was planned) and enters the hills and valleys of the California Coast Ranges. The highway crosses over Mission Pass, also known as the Sunol Grade, and descends into the Sunol Valley, where it meets SR 84 near Sunol. From Sunol, I-680 again heads north-northwesterly through valleys, including the San Ramon Valley, along the Calaveras Fault. Junctions along this portion include I-580 in Dublin and SR 24 in Walnut Creek. Beyond the latter interchange, a three-way directional junction with the SR 24 freeway west to Oakland, I-680 heads north into Pleasant Hill, where SR 242 splits and I-680 again heads northwesterly. After the junction with SR 4 in Martinez, the highway crosses the Carquinez Strait on the Benicia-Martinez Bridge, immediately meeting the east end of I-780 on the Benicia end. The remainder of I-680, from Benicia to I-80 at Fairfield, lies between a hilly area to the west representing the southwestern tip of the Vaca Mountains, and a marshy area (along the Suisun Bay and Cordelia Slough) to the east.

Interstate 680 (Ohio)

Interstate 680 (I-680) in the State of Ohio is the primary Interstate Highway passing through Youngstown, Ohio. Its northern terminus is at Interstate 80 and its southern terminus is at Interstate 76, the Ohio Turnpike.

Route description

I-680 begins at a junction with I-80 and SR 11 in Austintown. It verges southeast through a residential area in northeastern Austintown until crossing into Youngstown at milepost 2. The Interstate continues through residential areas until meeting the southern edge of downtown Youngstown. Once leaving downtown, the roadway turns south, bound for I-76. I-680 passes through residential Boardman and finally exiting into Mahoning County. Once passing Western Reserve Road, the Interstate becomes a spur of the Ohio Turnpike, making I-680 into a toll road. It passes through residential Mahoning County until reaching its terminus at the Ohio Turnpike.

Exit list

The entire route is in Mahoning County.

References

External links

Route map: Bing / Google