Out of 40,614 ZIP codes with at least 5 bridges on record, these areas have the highest share of bridges that the Federal Highway Administration's National Bridge Inventory rates in poor condition. Each ZIP links to a full safety report.
Every figure is a modeled estimate from public federal data — not an engineering assessment, a prediction of failure, or a judgment about any specific structure.
| Statistic | Value |
|---|---|
| ZIP codes ranked | 40,614 |
| Highest share rated poor | 45.9% |
| Bridges in #1 ZIP | 185 |
Top 100 ZIP Codes With the Most Bridges Rated Poor
| Rank | ZIP Code | City | State | % of Bridges Rated Poor |
|---|---|---|---|---|
| 1 | 50839 | Carbon | IA | 45.9% (185 bridges) |
| 2 | 50841 | Corning | IA | 45.9% (185 bridges) |
| 3 | 50857 | Nodaway | IA | 45.9% (185 bridges) |
| 4 | 50859 | Prescott | IA | 45.9% (185 bridges) |
| 5 | 50005 | Albion | IA | 42.9% (303 bridges) |
| 6 | 50051 | Clemons | IA | 42.9% (303 bridges) |
| 7 | 50078 | Ferguson | IA | 42.9% (303 bridges) |
| 8 | 50106 | Gilman | IA | 42.9% (303 bridges) |
| 9 | 50120 | Haverhill | IA | 42.9% (303 bridges) |
| 10 | 50141 | Laurel | IA | 42.9% (303 bridges) |
| 11 | 50142 | Le Grand | IA | 42.9% (303 bridges) |
| 12 | 50148 | Liscomb | IA | 42.9% (303 bridges) |
| 13 | 50158 | Marshalltown | IA | 42.9% (303 bridges) |
| 14 | 50162 | Melbourne | IA | 42.9% (303 bridges) |
| 15 | 50234 | Rhodes | IA | 42.9% (303 bridges) |
| 16 | 50239 | Saint Anthony | IA | 42.9% (303 bridges) |
| 17 | 50247 | State Center | IA | 42.9% (303 bridges) |
| 18 | 50074 | Ellston | IA | 40.9% (215 bridges) |
| 19 | 50133 | Kellerton | IA | 40.9% (215 bridges) |
| 20 | 50835 | Benton | IA | 40.9% (215 bridges) |
| 21 | 50845 | Diagonal | IA | 40.9% (215 bridges) |
| 22 | 50854 | Mount Ayr | IA | 40.9% (215 bridges) |
| 23 | 50860 | Redding | IA | 40.9% (215 bridges) |
| 24 | 50863 | Tingley | IA | 40.9% (215 bridges) |
| 25 | 50065 | Davis City | IA | 39.2% (199 bridges) |
| 26 | 50067 | Decatur | IA | 39.2% (199 bridges) |
| 27 | 50103 | Garden Grove | IA | 39.2% (199 bridges) |
| 28 | 50108 | Grand River | IA | 39.2% (199 bridges) |
| 29 | 50140 | Lamoni | IA | 39.2% (199 bridges) |
| 30 | 50144 | Leon | IA | 39.2% (199 bridges) |
| 31 | 50262 | Van Wert | IA | 39.2% (199 bridges) |
| 32 | 50264 | Weldon | IA | 39.2% (199 bridges) |
| 33 | 50112 | Grinnell | IA | 39.1% (243 bridges) |
| 34 | 50157 | Malcom | IA | 39.1% (243 bridges) |
| 35 | 50171 | Montezuma | IA | 39.1% (243 bridges) |
| 36 | 50242 | Searsboro | IA | 39.1% (243 bridges) |
| 37 | 52211 | Brooklyn | IA | 39.1% (243 bridges) |
| 38 | 52221 | Guernsey | IA | 39.1% (243 bridges) |
| 39 | 52222 | Deep River | IA | 39.1% (243 bridges) |
| 40 | 52232 | Hartwick | IA | 39.1% (243 bridges) |
| 41 | 00820 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 42 | 00821 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 43 | 00822 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 44 | 00823 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 45 | 00824 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 46 | 00840 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 47 | 00841 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 48 | 00850 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 49 | 00851 | U.S. Virgin Islands | VI | 38.1% (21 bridges) |
| 50 | 50833 | Bedford | IA | 36.8% (220 bridges) |
| 51 | 50836 | Blockton | IA | 36.8% (220 bridges) |
| 52 | 50840 | Clearfield | IA | 36.8% (220 bridges) |
| 53 | 50848 | Gravity | IA | 36.8% (220 bridges) |
| 54 | 50851 | Lenox | IA | 36.8% (220 bridges) |
| 55 | 50862 | Sharpsburg | IA | 36.8% (220 bridges) |
| 56 | 51646 | New Market | IA | 36.8% (220 bridges) |
| 57 | 32015 | Franklin County | FL | 36.6% (41 bridges) |
| 58 | 32300 | Franklin County | FL | 36.6% (41 bridges) |
| 59 | 32320 | Apalachicola | FL | 36.6% (41 bridges) |
| 60 | 32322 | Carrabelle | FL | 36.6% (41 bridges) |
| 61 | 32323 | Lanark Village | FL | 36.6% (41 bridges) |
| 62 | 32328 | Eastpoint | FL | 36.6% (41 bridges) |
| 63 | 32329 | Apalachicola | FL | 36.6% (41 bridges) |
| 64 | 32928 | Franklin County | FL | 36.6% (41 bridges) |
| 65 | 33531 | Franklin County | FL | 36.6% (41 bridges) |
| 66 | 33985 | Franklin County | FL | 36.6% (41 bridges) |
| 67 | 34230 | Sarasota | FL | 36.6% (41 bridges) |
| 68 | 50033 | Bevington | IA | 36.4% (225 bridges) |
| 69 | 50072 | Earlham | IA | 36.4% (225 bridges) |
| 70 | 50155 | Macksburg | IA | 36.4% (225 bridges) |
| 71 | 50218 | Patterson | IA | 36.4% (225 bridges) |
| 72 | 50222 | Peru | IA | 36.4% (225 bridges) |
| 73 | 50257 | Truro | IA | 36.4% (225 bridges) |
| 74 | 50273 | Winterset | IA | 36.4% (225 bridges) |
| 75 | 50002 | Adair | IA | 35.7% (263 bridges) |
| 76 | 50026 | Bagley | IA | 35.7% (263 bridges) |
| 77 | 50029 | Bayard | IA | 35.7% (263 bridges) |
| 78 | 50048 | Casey | IA | 35.7% (263 bridges) |
| 79 | 50070 | Dexter | IA | 35.7% (263 bridges) |
| 80 | 50115 | Guthrie Center | IA | 35.7% (263 bridges) |
| 81 | 50128 | Jamaica | IA | 35.7% (263 bridges) |
| 82 | 50164 | Menlo | IA | 35.7% (263 bridges) |
| 83 | 50216 | Panora | IA | 35.7% (263 bridges) |
| 84 | 50277 | Yale | IA | 35.7% (263 bridges) |
| 85 | 50020 | Anita | IA | 35.1% (296 bridges) |
| 86 | 50022 | Atlantic | IA | 35.1% (296 bridges) |
| 87 | 50274 | Wiota | IA | 35.1% (296 bridges) |
| 88 | 50843 | Cumberland | IA | 35.1% (296 bridges) |
| 89 | 50853 | Massena | IA | 35.1% (296 bridges) |
| 90 | 51535 | Griswold | IA | 35.1% (296 bridges) |
| 91 | 51544 | Lewis | IA | 35.1% (296 bridges) |
| 92 | 51552 | Marne | IA | 35.1% (296 bridges) |
| 93 | 68323 | Burchard | NE | 34.6% (191 bridges) |
| 94 | 68345 | Du Bois | NE | 34.6% (191 bridges) |
| 95 | 68380 | Lewiston | NE | 34.6% (191 bridges) |
| 96 | 68420 | Pawnee City | NE | 34.6% (191 bridges) |
| 97 | 68441 | Steinauer | NE | 34.6% (191 bridges) |
| 98 | 68447 | Table Rock | NE | 34.6% (191 bridges) |
| 99 | 50510 | Albert City | IA | 34.4% (157 bridges) |
| 100 | 50565 | Marathon | IA | 34.4% (157 bridges) |
Methodology
Bridge figures come directly from the Federal Highway Administration (FHWA) National Bridge Inventory, which records the structural condition of every public bridge in the United States. For each ZIP code, the share of bridges rated in poor condition is calculated from NBI condition ratings. Only ZIP codes with at least 5 bridges on record are ranked, so a single bridge does not swing the percentage. These are area-level figures — they describe the inventory of bridges in an area, not the safety of any specific bridge or any prediction about it.
Last updated: 2026-06-03.
Frequently Asked Questions
What does this bridge ranking measure?
It ranks U.S. ZIP codes by the share of bridges that the FHWA National Bridge Inventory rates in poor condition. A poor rating reflects the modeled or inspected structural condition recorded by FHWA — it is an area-level statistic, not a judgment about any specific bridge.
Where does the bridge data come from?
All figures come from the Federal Highway Administration’s National Bridge Inventory (NBI), the federal database of structural condition ratings for public bridges. ZipCheckup aggregates NBI ratings to the ZIP-code level.
Does a high rank mean the bridges are dangerous?
No. A poor NBI condition rating indicates a bridge needs maintenance or rehabilitation; it does not mean a bridge is unsafe to use. Bridges rated in poor condition remain open and are monitored by transportation agencies. The ranking is an area-level summary, not a safety verdict.
What can residents do with this information?
Residents can look up their ZIP code’s full report to see bridge condition alongside other infrastructure data, and can review their state or local transportation agency’s published bridge program for repair schedules. The figures are informational and reproducible from public NBI data.