Arkansas - Area of significance: Engineering
| Arkansas 11, Old, Kauffman Road Segment |
| Arkansas 22, Old, Barling Segment |
| Arkansas 51, Old, Curtis to Gum Springs |
| Arkansas 7/51 Bridge |
| Arkansas Highway 22, Old |
| Arkansas Highway 57 Bridge |
| Bearden Waterworks |
| Beaver Bridge |
| Beech Street Brick Street |
| Big Botton Slough Bridge |
| Big Piney Creek Bridge |
| Birney Safety Streetcar No. 224 |
| Block 35 Cobblestone Alley |
| Brush Creek Bridge |
| Cache River Bridge |
| Cannon Creek Bridge |
| Cedar Creek Bridge |
| Cedar Creek Bridge |
| Central Avenue Bridge |
| Central Texas Gravel Locomotive #210 |
| Coop Creek Bridge |
| Cotter Bridge |
| Cotter Tunnel |
| Cotter Water Tower |
| Cotton Plant Water Tower |
| County Road 6 Bridge |
| Cove Creek Bridge |
| Cove Creek Tributary Bridge |
| Craighead County Road 513C Bridge |
| Cricket and Crest Tunnels Historic District |
| Crooked Creek Bridge |
| DeGray Creek Bridge |
| Delta Valley & Southern Railway Locomotive #50 |
| De Valls Bluff Waterworks |
| DODX Guard Car #G-56 |
| Dollarway Road |
| Edgemere Street Bridge |
| Evansville-Dutch Mills Road Bridge |
| Fordyce House |
| Fourche LaFave River Bridge |
| Frog Bayou Bridge |
| George Ray's Dragstrip |
| Goff Farm Stone Bridge |
| Green Forest Water Tower |
| Hackett Creek Bridge |
| Haggard Ford Swinging Bridge |
| Hale Creek Bridge |
| Hampton Waterworks |
| Harp Creek Bridge |
| Hartford Water Tower |
| Highway 79 Bridge (Boundary Increase and Additional Documentation) |
| Highway A-7, Bridges Historic District |
| Highway A-7, Ditch No. 6 Bridge |
| Highway A-7, Gilmore to Turrell |
| Highway A-7, Tyronza Segment |
| Highway B-1, Little Telico Creek Bridge |
| Highway B-29 Bridge |
| Hubbard Rice Dryer |
| Hughes Water Tower |
| I-40 Overpass |
| Illinois River Bridge |
| Illinois River Bridge |
| Illinois River Bridge at Phillips Ford |
| Johnson County Line-Ozark-Crawford County Line Road, Altus Segment |
| Jones, Gould, Reservoir |
| Judsonia Bridge |
| Kansas City Southern Railway Caboose #383 |
| Kansas City Southern Railway Locomotive #73D and Caboose #385 |
| Keiser Water Tower |
| Lafayette Street Overpass |
| Lake No. 1 Bridge |
| Lakeshore Drive Bridge |
| Laney, Ben, Bridge |
| Leatherwood Dam |
| Lee Creek Bridge |
| Lincoln Avenue Viaduct |
| Little Buffalo River Bridge |
| Little Cossatot River Bridge |
| Little Cypress Creek Bridge |
| Little Missouri River Bridge |
| Lockesburg Waterworks |
| Main Street Bridge |
| Mammoth Spring Dam and Lake |
| Maple Street Overpass |
| Marianna Waterworks |
| Marked Tree Lock and Siphons |
| Marr's Creek Bridge |
| Maumelle Ordnance Works Locomotive #1 |
| Maumelle River Bridge |
| Maxwell Street Bridge |
| McCrory Waterworks |
| Memphis and Arkansas Bridge |
| Middle Fork of the Little Red River Bridge |
| Miller Creek Bridge |
| Milltown Bridge |
| Mineral Springs Waterworks |
| Missouri Pacific Railway Caboose #928 |
| Monette Water Tower |
| Mountain Fork Bridge |
| Mountain View Waterworks |
Data from United States Park Service and Wikidata
