# California State Route 273

State Route 273 (SR 273) is a state highway in the U.S. state of California that serves as a business loop of Interstate 5 that travels directly through the downtown districts of Anderson and Redding in Shasta County.
SR 273 was part of former U.S. Route 99. In 2007 an effort was begun to have this segment signed as "Historic Route 99". Supporters hope to have black-and-white historical Route 99 signs up by October. They will be placed from North Market Street in Redding down to where Interstate 5 meets Highway 273 south of Anderson.

## Route description

SR 273 begins just south of Anderson at an interchange with Interstate 5. The roadway then parallels I-5 northeast into central Anderson. Upon exiting a suburban area, the route enters farmland, while paralleling the Sacramento River. The roadway then enters suburban Redding, where it turns away from the Sacramento River and zigzags along local roads through downtown, where it meets State Route 299. Upon exiting downtown, SR 273 crosses the Sacramento River and meets its northern terminus at Interstate 5 in the suburbs of Redding.
SR 273 is part of the National Highway System, a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.

## Major intersections

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment of U.S. Route 99 as it existed at that time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions). Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Shasta County.
| Location | Postmile | Destinations | Notes |
| Anderson | 3.82 | I-5 south – Sacramento | Interchange; I-5 north exit 667A; former US 99 south; no direct access to I-5 north |
| Anderson | 4.29 | Factory Outlets Drive to I-5 north / Deschutes Road – Redding, Coleman Fish Hatchery | |
| Redding | 15.98 | Cypress Avenue to I-5 | South end of one-way pair where southbound traffic stays on Market Street and northbound traffic diverts to Pine Street and then Eureka Way; former SR 44 east |
| Redding | R16.66R– R16.80L | SR 44 east (Tehama Street) to I-5 | One-way street; south end of SR 44 overlap; former US 299 east |
| Redding | R16.73R | Shasta Street (SR 44) | One-way street, inbound access only where SR 44 west traffic joins SR 273 north |
| Redding | 16.83 | SR 44 east / SR 273 south (Market Street south) | North end of one-way pair where southbound traffic stays on Market Street and northbound traffic joins from Eureka Way east; north end of SR 44 overlap; western terminus of SR 44; south end of SR 299 overlap; former US 299 west |
| Redding | 16.83 | SR 299 west (Eureka Way west) – Weaverville, Eureka | North end of one-way pair where southbound traffic stays on Market Street and northbound traffic joins from Eureka Way east; north end of SR 44 overlap; western terminus of SR 44; south end of SR 299 overlap; former US 299 west |
| Redding | 18.62 | SR 299 east (Lake Boulevard east) to I-5 south | North end of SR 299 overlap |
| Redding | 18.62 | Lake Boulevard west (CR A18) | Eastern terminus of CR A18 |
| Redding | 20.03 | I-5 north – Portland | Interchange; I-5 south exit 681B; former US 99 north; no direct access to I-5 south |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access ||||