Chicago Bridge & Iron was founded in 1867 and is now a public company with worldwide operations and headquarters in the Netherlands. The Navy requisitioned the Chicago Bridge facility in Seneca IL in 1942 and invested $6mm in its improvement. Known as the Prairie Shipyard, it was located on a 200-acre site on the east side of the town. You can see it clearly from the air on Google here. After the war it was used for multiple purposes and is now, apparently, a Union Mechling facility.
| Name | Type | Pennant # | FY | Keel Laid | Launched | Delivered | Days on Ways | Days in Water | Total Days |
Disposition |
| No name | LST | 197 | 1942 | 6/15/42 | 12/13/42 | 2/5/43 | 181 | 54 | 235 | Scrapped 1947 |
| No name | LST | 198 | 1942 | 6/22/42 | 1/17/43 | 2/15/43 | 209 | 29 | 238 | To Britain 1943, scrapped 1947 |
| No name | LST | 199 | 1942 | 6/27/42 | 2/7/43 | 3/1/43 | 225 | 22 | 247 | To Britain 1943, lost at sea 1946 |
| No name | LST | 200 | 1942 | 7/2/42 | 2/20/43 | 3/16/43 | 233 | 24 | 257 | To Britain 1943, scrapped 1948 |
| No name | LST | 201 | 1942 | 7/13/42 | 3/2/43 | 4/2/43 | 232 | 31 | 263 | Pontus (AGP 20) 1944, scrapped 1947 |
| No name | LST | 202 | 1942 | 7/15/42 | 3/16/43 | 4/9/43 | 244 | 24 | 268 | Scrapped 1947 |
| No name | LST | 203 | 1942 | 7/2/42 | 3/25/43 | 4/22/43 | 266 | 28 | 294 | Wrecked and abandoned in the Ellice Islands 1943 |
| No name | LST | 204 | 1942 | 7/24/42 | 4/3/43 | 4/27/43 | 253 | 24 | 277 | Scrapped 1947 |
| No name | LST | 205 | 1942 | 8/5/42 | 4/13/43 | 5/15/43 | 251 | 32 | 283 | Scrapped 1947 |
| No name | LST | 206 | 1942 | 8/6/42 | 4/21/43 | 6/7/43 | 258 | 47 | 305 | Scrapped 1947 |
| No name | LST | 207 | 1942 | 9/6/42 | 4/29/43 | 6/9/43 | 235 | 41 | 276 | Scrapped 1947 |
| No name | LST | 208 | 1942 | 9/6/42 | 5/22/43 | 6/8/43 | 258 | 17 | 275 | Scrapped 1947 |
| Bamberg County | LST | 209 | 1942 | 9/6/42 | 5/29/43 | 6/10/43 | 265 | 12 | 277 | To MSTS 1946, scrapped 1961 |
| No name | LST | 210 | 1942 | 9/6/42 | 6/5/43 | 7/6/43 | 272 | 31 | 303 | Scrapped 1947 |
| No name | LST | 211 | 1942 | 9/6/42 | 6/5/43 | 7/6/43 | 272 | 31 | 303 | Scrapped 1947 |
| No name | LST | 212 | 1942 | 12/6/42 | 6/12/43 | 7/6/43 | 188 | 24 | 212 | Sold private 1947 |
| No name | LST | 213 | 1942 | 12/21/42 | 6/16/43 | 7/7/43 | 177 | 21 | 198 | To Korea 1947 |
| No name | LST | 214 | 1942 | 12/29/42 | 6/22/43 | 7/7/43 | 175 | 15 | 190 | To Britain 1943, scrapped 1947 |
| No name | LST | 215 | 1942 | 1/7/43 | 6/26/43 | 7/12/43 | 170 | 16 | 186 | To Britain 1943, scrapped 1947 |
| No name | LST | 216 | 1942 | 1/23/43 | 7/4/43 | 7/23/43 | 162 | 19 | 181 | To Britain 1943, sunk by aircraft-launched torpedo off Cherbourg 1944 |
| No name | LST | 217 | 1942 | 2/2/43 | 7/13/43 | 7/30/43 | 161 | 17 | 178 | To Britain 1943, scrapped 1947 |
| No name | LST | 218 | 1942 | 2/11/43 | 7/20/43 | 8/12/43 | 159 | 23 | 182 | To Korea 1955 as Bi Bong |
| No name | LST | 219 | 1942 | 2/15/43 | 7/27/43 | 8/19/43 | 162 | 23 | 185 | Scrapped 1947 |
| No name | LST | 220 | 1942 | 3/4/43 | 8/3/43 | 8/26/43 |