San Mateo County Bonus Segments
| Route | Beginning Post Mile* | Ending Post Mile* |
|---|---|---|
| 280 | 0.07 | 1.29 |
| 280 | 1.83 | 2.28 |
| 280 | 2.28 | 3.33 |
| 280 | 3.38 | 4.94 |
| 280 | 5.21 | 5.61 |
| 280 | 5.62 | 5.65 |
| 280 | 5.65 | 6.61 |
| 280 | 6.71 | 10.18 |
| 280 | 11.45 | 12.24 |
| 280 | 12.52 | 12.9 |
| 280 | 12.97 | 14.32 |
| 280 | 14.39 | 14.58 |
| 280 | 14.72 | 14.79 |
| 280 | 15.14 | 15.7 |
| 280 | 15.89 | 16.87 |
| 280 | 19.27 | 20.79 |
| 280 | 20.87 | 21.35 |
| 280 | 21.42 | 21.85 |
| 280 | 22.48 | 22.55 |
| 280 | 22.99 | 23.76 |
| 280 | 23.82 | 23.9 |
| 280 | 23.92 | 23.99 |
| 280 | 24.08 | 24.26 |
| 280 | 24.33 | 24.72 |
| 380 | 4.78 | 5.48 |
| 380 | 5.53 | 6.24 |
*Post miles are mile markers along the highway. They increase going northbound or eastbound starting at zero at the county line. Due to realignments over time there is not always a mile between post miles.