| 4.2 km || |-id=277 bgcolor=#E9E9E9 | 50277 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 3.0 km || |-id=278 bgcolor=#E9E9E9 | 50278 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 3.4 km || |-id=279 bgcolor=#E9E9E9 | 50279 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 5.5 km || |-id=280 bgcolor=#E9E9E9 | 50280 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 3.4 km || |-id=281 bgcolor=#E9E9E9 | 50281 || || — || February 2, 2000 || Socorro || LINEAR || EUN || align=right | 4.1 km || |-id=282 bgcolor=#E9E9E9 | 50282 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=283 bgcolor=#E9E9E9 | 50283 || || — || February 2, 2000 || Socorro || LINEAR || HOF || align=right | 5.6 km || |-id=284 bgcolor=#E9E9E9 | 50284 || || — || February 2, 2000 || Socorro || LINEAR || NEM || align=right | 6.2 km || |-id=285 bgcolor=#fefefe | 50285 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 5.7 km || |-id=286 bgcolor=#fefefe | 50286 || || — || February 2, 2000 || Socorro || LINEAR || MAS || align=right | 1.8 km || |-id=287 bgcolor=#d6d6d6 | 50287 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 3.8 km || |-id=288 bgcolor=#E9E9E9 | 50288 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 8.2 km || |-id=289 bgcolor=#E9E9E9 | 50289 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 3.6 km || |-id=290 bgcolor=#fefefe | 50290 || || — || February 2, 2000 || Socorro || LINEAR || FLO || align=right | 3.7 km || |-id=291 bgcolor=#E9E9E9 | 50291 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 4.0 km || |-id=292 bgcolor=#fefefe | 50292 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 2.2 km || |-id=293 bgcolor=#E9E9E9 | 50293 || || — || February 2, 2000 || Socorro || LINEAR || — || align=right | 4.1 km || |-id=294 bgcolor=#fefefe | 50294 ||