< Iowa 
      Iowa/Highway Relations
County Highways
| Route Number | Relation | Progress and notes | 
|---|---|---|
| B40 | 337454 337454 | |
| C24 | 385626 385626 | |
| C2W | 385627 385627 | |
| C57 | 385622 385622 | |
| D23 | 369423 369423 | |
| D25 | 369094 369094 4075299 4075299 | |
| D55 | 384568 384568 | |
| D57 | 385609 385609 | |
| E17 | 384566 384566 | |
| E26 | 368491 368491 | |
| E29 | 385612 385612 | |
| E41 | 376226 376226 | |
| E50 | 383020 383020 | |
| E55 | 376942 376942 | |
| E57 | 402293 402293 | |
| E63 | 376942 376942 | |
| F18 | 383825 383825 | |
| F22 | 359988 359988 | |
| F24 | 368014 368014 | |
| F34 | 369513 369513 | |
| F38 | 360253 360253 | |
| F48 | 368002 368002 | |
| F62 | 368026 368026 | |
| F70 | 370719 370719 | |
| J13 | 338716 338716 | |
| J20 | 338717 338717 | |
| N61 | 338720 338720 | |
| N64 | 338719 338719 | |
| P70 | 369582 369582 | |
| R56 | 367026 367026 | |
| R57 | 411503 411503 | |
| S14 | 359985 359985 | |
| S27 | 359989 359989 | |
| S28 | 360092 360092 | |
| W67 | 385624 385624 | |
| Y14 | 383826 383826 | |
| Y24 | 383742 383742 | |
| Y31 | 375044 375044 | |
| Y32 | 383741 383741 | |
| Y34 | 383829 383829 | |
| Y52 | 383736 383736 | |
| Y61 | 385611 385611 | |
| Y62 | 382239 382239 | |
| Z24 | 383742 383742 | |
| Z30 | 382701 382701 | |
| Z34 | 383223 383223 | |
| Z36 | 382469 382469 | |
| Z40 | 383018 383018 | |
| Z46 | 382915 382915 | |
| Z50 | 383019 383019 | 
State Highways
Set network=US:IA. Where a route is one-way, use one relation with role=north/south/east/west as appropriate. Please add relations to this table once they've been created.
| Route Number | Relation | Progress and notes | 
|---|---|---|
| 3 | 375245 375245 | |
| 13 | 385619 385619 | |
| 17 | 116963 116963 | |
| 25 | 338721 338721 | |
| 27 | 375244 375244 | |
| 32 | 385608 385608 | |
| 46 | 365514 365514 | |
| 60 | 349531 349531 | Complete | 
| 62 | 376933 376933 | |
| 64 | 376931 376931 | |
| 87 | 363885 363885 | |
| 112 | 385625 385625 | |
| 117 | 367451 367451 | |
| 136 | 376932 376932 | |
| 141 | 126796 126796 | |
| 160 | 117310 117310 | |
| 163 | 369512 369512 | |
| 175 | 117909 117909 | |
| 182 | 337206 337206 | Complete | 
| 187 | 385623 385623 | |
| 210 | 117009 117009 | Complete | 
| 246 | 384567 384567 | |
| 410 | 385621 385621 | |
| 415 | 116962 116962 | |
| 428 | 375043 375043 | |
| 931 | 369442 369442 | |
| 945 | 360200 360200 | 
See also
List of Iowa state highways
US Highways
Be sure to update United States Numbered Highway Relations when updating this table.
| Route number | Relation | States | Progress | 
|---|---|---|---|
| 6 | 113181 113181 | CA;NV;UT;CO;NE;IA;IL;IN;OH;PA;NY;CT;RI;MA | Adel-Altoona in Iowa complete | 
| 20 | 112101 112101 | OR;ID;MT;WY;NE;IA;IL;OH;IN;PA;NY;MA | Various sections from Chicago to Hammond. | 
| 18 | 338049 338049 | WY;SD;IA;WI; | From Western border of Iowa | 
| 30 | 120337 120337 | OR;ID;WY;NE;IA;IL;IN;OH;WV;PA;NJ | From Omaha to the Iowa–Illinois state line near Clinton. | 
| 34 | 112334 112334 | CO;NE;IA;IL | Complete from I-29 to I-35 | 
| 52 | 271863 271863 | ||
| 61 | 139083 139083 | ||
| 63 | 62911 62911 | LA; AR; MO; IA; MN; WI | |
| 65 | 121137 121137 | LA; AR; MO; IA; MN | |
| 67 | 139084 139084 | ||
| 69 | 62156 62156 | TX; OK; KS; MO; IA; MN | IA is complete | 
| 71 | 62805 62805 | LA; TX; AR; MO; IA; MN | |
| 75 | 272573 272573 | TX; OK; KS; NE; IA; MN | |
| 169 | 62154 62154 | OK; KS; MO; IA; MN | |
| 218 | 375247 375247 | 
Interstates
Be sure to update Interstate Highways Relations when updating this table.
| Number | Relation | States | Progress and notes | 
|---|---|---|---|
| 35 | 62151 62151 70277 70277 113175 113175 | TX;OK;KS;MO;IA;MN | |
| 74 | 171159 171159 | IA;IL;IN;OH;NC | IA is complete | 
| 80 | 113177 113177 | IA | Complete | 
Auxiliary List
wikipedia:List of auxiliary Interstate Highways
| Parent | Route number | States | Relation | Progress and notes | 
|---|---|---|---|---|
| 35 | 235 | IA | 113176 113176 | In progress. | 
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