Interstate 80 Business (Sacramento, California)

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Interstate 80 Business
Length: 14.50 mi[1] (23.34 km)
Formed: 1981 (from I-80)[2]
West end: I-80 in West Sacramento
Major
junctions:		 I-5 in Sacramento
US 50/SR 99 in Sacramento
East end: I-80/SR 244 in Sacramento
California State Routes
< US 50 51 SR 52 >
< SR 299 305 SR 330 >
Unconstructed - Deleted - Freeway - Scenic

Interstate 80 Business, called the Capital City Freeway in its entirety, is a Business Loop of Interstate 80 through Sacramento. As it is state-maintained, unlike most business routes in California, it is assigned route numbers - part of U.S. Route 50 on its western half (5.64 miles/9.08 km), and unsigned State Route 51 on its eastern half (8.86 miles/14.26 km). The full road is a freeway, and carried Interstate 80 until 1981, when it was swapped with Interstate 880. At that time, the American Association of State Highway and Transportation Officials (AASHTO) assigned the Interstate 305 designation to the west half, which met Interstate Highway standards. However, the California Department of Transportation (Caltrans) has never signed this number, put it on any road signs, or used it internally. (Note: The Federal Highway Administration lists unsigned I-305 as 8.44 miles (13.58 km),[3] increased from 5.3 miles (8.5 km) in 1999.[4] This roughly matches the distance west of the Sacramento River, where the North Sacramento Freeway replacement would have split, but there is no evidence pointing specifically to this.)

Contents

[edit] Description

[edit] Western section BUS I-80/US 50/I-305

Business 80 begins in West Sacramento at Interstate 80, where I-80 leaves the West Sacramento Freeway onto the newer bypass. This is also the west end of U.S. Route 50 and the west end of the unsigned I-305.

Near downtown West Sacramento, Business 80 and US 50 split from the West Sacramento Freeway, which is now locally maintained over the Tower Bridge, but once carried State Route 275. Business 80 crosses the Sacramento River on the Pioneer Bridge, intersecting with Interstate 5 on the east bank. State Route 99 once ran along I-5 to the north and Business 80 to the east, but this is now signed TO SR 99. After crossing I-5, Business 80 runs on top of an embankment between W and X Streets; this was originally known as the WX Freeway.

At an interchange southeast of downtown Sacramento, Business 80 turns north onto the south end of unsigned SR 51. US 50 continues east, State Route 99 heads south, and the "hidden" I-305 ends. The embankment carrying Business 80 east of downtown is between 29th and 30th Streets, and was known as the Elvas Freeway. Northeast of downtown, Business 80 crosses the American River before merging with the North Sacramento Freeway (the northern portion of State Route 160 towards downtown).

[edit] Eastern section BUS I-80/SR 51

The North Sacramento Freeway is built to lower standards than the rest of Business 80; the cancellation of its Interstate Highway standards replacement to the west led to the rerouting of I-80 around downtown. The North Sacramento Freeway becomes the Roseville Freeway at the curve north of Marconi Avenue(Marconi Curve) (where the freeway once ended at Auburn Boulevard). At the east end of Business 80, the Roseville Freeway continues northeast to Roseville as Interstate 80, while the short unsigned State Route 244 heads east to Auburn Boulevard. I-80 heads west around the north side of Sacramento; the built portion of the North Sacramento Freeway replacement, in the median of I-80, now serves as parking and access for the northernmost three stations (Watt/I-80, Watt I-80 West, and Roseville Road) on the Sacramento Regional Transit District's light rail Blue Line.

[edit] History

Business 80 was part of Interstate 80 until 1981. The replacement for the North Sacramento Freeway was cancelled in 1979, and in 1980 the Federal Highway Administration removed it from the Interstate Highway System, redesignating the west half (which met Interstate Highway standards) as I-305. The east half was designated Federal Aid Primary 51. The next year, the California State Legislature extended U.S. Route 50 west to cover the west half of old I-80, and the east half was assigned the new SR 51 number (last used in 1965 for a short route in Orange).[2] (The Interstate 880 designation, which had been used for the bypass, was reused in 1983-84 for a route in the San Francisco Bay Area.)

The old I-80 was never signed as US 50 (alone) or SR 51, but as a business route. Unlike most business routes in California, which run along locally-maintained streets through a downtown area, Business 80 was not assigned to the pre-freeway alignment of U.S. Route 40, but to a freeway. The existence of two freeways, both numbered 80, has caused some confusion, and in 1996 the full route was given the Capital City Freeway name. This name appears on overhead signs at prominent interchanges.

An earlier State Route 51 was defined on July 1, 1964 on a section of pre-1964 Legislative Route 2, providing a loop east of Interstate 5 (pre-1964 Legislative Route 174 there) through Orange, around the Orange Crush Interchange. It was removed from the state highway system in 1965.[5][6]

[edit] Route confusion

Business 80 is referred to as Business 80, Biz 80, Capital City Freeway, and US 50 (western section only) by residents and mapmakers. Caltrans does not normally use the Business 80 designation, except for signage and other related concepts like Cal-NExUS exit numbers (which are continuous along the business loop). Caltrans refers to the western half as US 50 and the eastern half as SR 51 for traffic condition reporting. The Caltrans traffic camera system refers to the route by its name, Capital City Freeway.

The SR 99 concurrency is not officially designated by Caltrans, but mapmakers often show it as such. SR 99 signage had existed along that route for motorists' convenience, but was removed in 2000, and replaced by TO SR 99 signs instead.

[edit] Control cities

Eastbound

Westbound

[edit] Exit list

Mileposts derived from[1] and exit numbers derived from.[7]

County Location Postmile # Destinations Notes
County Statewide
Western terminus of () BUS I-80/US 50 (I-305). Traffic defaults onto I-80 West.
Yolo West Sacramento YOL 0.00   Interstate 80 West - San Francisco Westbound exit and eastbound entrance
YOL 0.00 1A Interstate 80 East - Reno, Nevada Westbound exit and eastbound entrance
YOL 1.20 1B Harbor Boulevard Exit 1 eastbound
YOL 2.15
YOL 2.30
YOL 2.49		 3 () Jefferson Boulevard; Downtown Sacramento; West Sacramento (State Route 84; State Route 275)
Sacramento Sacramento SAC 0.35 3.51 4A Interstate 5 to State Route 99 (North) - Los Angeles; Redding
4B Downtown; 5th Street Eastbound exit and westbound entrance
SAC 0.96 4.12 4B Downtown; 10th Street Westbound exit, accessible via W St, and eastbound entrance, accessible via X St
SAC 1.37
SAC 1.45		 4.53
4.61		 5 State Route 160 - 15th Street; 16th Street
SAC 2.48
SAC 0.00		 5.64 6A U.S. Route 50 East - Placerville; South Lake Tahoe US 50 joins westbound and leaves eastbound
6B State Route 99 South - Fresno
Split from US 50
(Eastern terminus of I-305. Western terminus of SR 51.)
6C T Street Eastbound exit and westbound entrance. Cal-NExUS currently lists this exit under Bus 80 but these ramps can only be accessed from SR 99; they split from SR 51 before the ramps from US 50 east merge.
6C P Street Westbound exit and eastbound entrance
7A N Street Eastbound exit and westbound entrance
7A J Street Westbound exit and eastbound entrance
SAC 1.15 6.79 7B H Street Eastbound exit and westbound entrance
SAC 1.44 7.08 7B E Street Westbound exit and eastbound entrance
SAC 3.36 9.00 9A Cal Expo (Exposition Blvd)
SAC 4.09
SAC 4.18		 9.73
9.82		 9B State Route 160 - Downtown Sacramento Westbound exit and eastbound entrance
SAC 4.04 9.68 10A Arden Way; To State Route 160 Exit 9B eastbound
SAC 4.74 10.38 10B El Camino Avenue - Carmichael Exit 10 eastbound
SAC 5.50 11.14 11 Marconi Avenue; Auburn Boulevard Westbound exit accessible via Connie Dr
12A Howe Avenue Eastbound exit and eastbound entrance
12B Bell Street; Auburn Boulevard Eastbound exit only
SAC 6.79 12.43 12C Fulton Avenue Exit 12 westbound; eastbound exit accessible via Auburn Blvd
SAC 7.98 13.62 14B Watt Avenue Split between Exits 14A (South, accessible via Auburn Blvd) and 14B (North) eastbound
SAC 8.52 14.16 14C () Auburn Boulevard (State Route 244) Exit 14A westbound; first Cal-NExUS sign posted was westbound here
SAC 8.86 14.50 Interstate 80 East - Reno, Nevada Eastbound exit and westbound entrance
Eastern terminus of () BUS I-80 (SR 51). Traffic defaults onto I-80 East.

[edit] See also

[edit] References

  1. ^ a b January 1, 2006 California Log of Bridges on State Highways
  2. ^ a b California Highways: Interstate 80
  3. ^ Auxiliary Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of October 31, 2002
  4. ^ Kurumi.com: I-305 California
  5. ^ District VII State Highway Numbering Map, September 20, 1963
  6. ^ California Highways: Route 51
  7. ^ Cal-NExUS Interchange Exit Numbering

[edit] External links

 Auxiliary routes of Interstate 5
Current and Future (F) Former
I-105 California - Oregon
I-205 California - Oregon/Washington
I-305 California Oregon
I-405 California - Oregon - Washington
I-505 California Oregon
I-605 California Washington
I-705 Washington
I-805 California
I-905 California (F)
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