Chapter 3 - Bridges, Viaducts, and Subways (Section 9-301 to Section 9-326)
- Section 9-301 - Control of bridges; exception
- Section 9-302 - Construction and repair of bridges over railway and canal rights-of-way
- Section 9-303 - Bridges across Rock Creek
- Section 9-304 - Pennsylvania Avenue Bridge
- Section 9-305 - Anacostia Bridge
- Section 9-306 - John Philip Sousa Bridge
- Section 9-307 - Highway Bridge
- Section 9-308 - Rochambeau Bridge
- Section 9-309 - Construction of power boats; exception; "power boats" defined
- Section 9-310 - Monroe Street Bridge
- Section 9-311 - Francis Scott Key Bridge
- Section 9-312 - South Dakota Avenue Bridge
- Section 9-313 - Connecticut Avenue Bridge over Klingle Valley
- Section 9-314 - Benning Bridge
- Section 9-315 - Fern and Varnum Streets and Eastern Avenue Viaducts
- Section 9-316 - Certain grade crossings to be closed after completion of Fern Street Viaduct
- Section 9-317 - Van Buren Street Subway
- Section 9-318 - Grade crossing at Lamond closed
- Section 9-319 - Cedar Street Subway
- Section 9-320 - Michigan Avenue Viaduct-Construction; cost; highway grade closed
- Section 9-321 - Michigan Avenue Viaduct-Use by street railway companies
- Section 9-322 - Highway grade crossing at Michigan Avenue closed
- Section 9-323 - Subway under Baltimore and Ohio tracks in vicinity of Chestnut Street, Fern Place, and Piney Branch Road
- Section 9-324 - Calvert Street Bridge
- Section 9-325 - Francis Case Memorial Bridge
- Section 9-326 - Washington Channel Bridge