| Key | Value |
| alt_name | 新中橫公路水里玉山線 |
| alt_name:en | New Central Cross-Island Highway |
| alt_name:zh | 新中橫公路水里玉山線 |
| highway | primary |
| lanes | 2 |
| layer | -1 |
| lit | yes |
| maxspeed | 30 |
| maxspeed:type | sign |
| name:2020-07-31-2022-12-09 | 台21線115K+540災害路段復建工程 |
| ref | 21 |
| ref:en | Provincial Highway 21 |
| ref:zh | 台21線 |
| start_date | 2022-12-09 |
| surface | asphalt |
| tunnel | yes |