Washington 510
| Termini | Marvin Rd and I-5 (exit 111) in Lacey to WA-507 in Yelm |
| Length | 13.1 miles |
| "Where does it go?" | WA-510 runs from Lacey, east of Olympia, to Yelm. |

| SB Miles | Southbound down | Northbound up | NB Miles | Multiplex | Near City or Town |
County |
| 0.0 | Marvin
Rd NE![]() |
13.1 | Marvin Rd NE | Lacey | Thurston | |
| 0.2 | ![]() |
13.0 | ||||
| 0.2 | Quinault Dr NE | 12.9 | ||||
| 0.5 | Martin Way E | 12.6 | Marvin Rd
NE Marvin Rd SE |
|||
| 1.2 | Steilacoom Rd SE | 11.9 | Marvin Rd SE | |||
| 1.8 | Pacific
Ave SE Marvin Rd SE |
11.4 | Marvin Rd
SE Pacific Ave SE |
|||
| 3.8 | Old Pacific Hwy SE | 9.4 | St Clair Cut-Off Rd SE | |||
| 4.4 | Meridian Rd SE | 8.7 | ||||
| 6.6 | Reservation Rd | 6.6 | ||||
| 6.7 | Yelm Hwy SE | 6.4 | Yelm | |||
| 13.1 | 1st
St E Yelm Ave ![]() |
0.0 | E Yelm Ave | |||