| Is 270 over Old Farm Creek | Montgomery | 265,320 | Fair | 1958 |
| Is 270 over Tuckerman Lane | Montgomery | 265,320 | Fair | 1958 |
| Is 495 over Stoney Brook DR Rock CR | Montgomery | 242,821 | Fair | 1964 |
| Is 495 over Md 650 | Montgomery | 242,500 | Fair | 1963 |
| Is 270 & Cd Rds over Watts Branch | Montgomery | 239,460 | Fair | 1955 |
| Is 495 over Md 185 | Montgomery | 239,310 | Fair | 1964 |
| Is 495 over Kensington PKWY | Montgomery | 239,310 | Fair | 1964 |
| Is 495 over Potomac River | Montgomery | 239,022 | Fair | 1963 |
| Is 495 over Cedar Lane | Montgomery | 238,050 | Fair | 1964 |
| Is 495 over Br Of Rock Creek | Montgomery | 238,050 | Fair | 1958 |
| Is 495 over Md 97 | Montgomery | 232,010 | Good | 1960 |
| Is 495 over Sligo Creek Trail | Montgomery | 232,010 | Good | 2001 |
| Is 495 over Sligo Creek | Montgomery | 232,010 | Fair | 1960 |
| Is 495 over Sligo Creek Parkway | Montgomery | 232,010 | Fair | 1959 |
| Is 495 over Brunett Avenue | Montgomery | 232,010 | Fair | 1959 |
| Is 495 over Clara Barton Parkway EB | Montgomery | 228,218 | Fair | 1963 |
| Is 95 over Little Paint Branch | Prince George's | 226,340 | Fair | 1963 |
| I-495 I.l. over Amtrak | Prince George's | 226,100 | Fair | 1964 |
| I-495 O.l. over Amtrak | Prince George's | 226,100 | Fair | 1964 |
| Is 95/495 over Md 214 | Prince George's | 224,775 | Good | 2020 |
| Is 95/495 over Md 214 | Prince George's | 224,775 | Good | 2020 |
| Is 495 over Northwest Branch | Montgomery | 222,147 | Fair | 1967 |
| Is 95 Il over Md 193 | Prince George's | 220,640 | Fair | 1963 |
| Is 95 Ol over Md 193 | Prince George's | 220,640 | Fair | 1963 |
| Is 270 over Is 370 And Ramp B | Montgomery | 216,270 | Fair | 1989 |
| Is 95 Il over Rhode Island Avenue | Prince George's | 215,560 | Fair | 1963 |
| Is 95 Ol over Rhode Island Avenue | Prince George's | 215,560 | Fair | 1963 |
| Is 495 over Seven Locks RD | Montgomery | 214,005 | Fair | 1962 |
| Is 495 & Ramp K(4) over Is 495x & C J CR | Montgomery | 214,005 | Fair | 1962 |
| Is 495 over Macarthur BLVD Cb PKWY | Montgomery | 212,410 | Fair | 1963 |
| Is 95 Il over Indian Creek | Prince George's | 211,410 | Fair | 1963 |
| Is 95 Ol over Indian Creek | Prince George's | 211,410 | Fair | 1963 |
| Is 95 Il over Br Of Indian Creek | Prince George's | 211,410 | Fair | 1963 |
| Is 95 Ol over Br Of Indian Creek | Prince George's | 211,410 | Fair | 1963 |
| Is 695 over Mta Light Rail | Baltimore | 205,485 | Fair | 1955 |
| Is 95 Il over Good Luck Road | Prince George's | 204,147 | Fair | 1963 |
| Is 95 Ol over Good Luck Road | Prince George's | 204,147 | Fair | 1963 |
| Is 95/495 over Md 450 | Prince George's | 204,147 | Fair | 1963 |
| Is 95/495 over Md 450 | Prince George's | 204,147 | Fair | 1963 |
| Is 95 Il over Ritchie Marlboro Road | Prince George's | 201,196 | Fair | 1964 |
| Is 95 Ol over Ritchie Marlboro Road | Prince George's | 201,196 | Fair | 1964 |
| Is 95/495 over Md 4 | Prince George's | 201,196 | Fair | 1963 |
| Is 95/495 over Md 4 | Prince George's | 201,196 | Fair | 1963 |
| Is 95 NB over Md 103 | Howard | 193,331 | Fair | 1968 |
| Is 95 SB over Md 103 | Howard | 193,331 | Fair | 1968 |
| Is 695 over Is 83 Sbr & Jones Falls | Baltimore | 192,739 | Fair | 1961 |
| Is 95 & Ramps 2 & over Hammond Branch | Howard | 192,401 | Fair | 1968 |
| Is 95/is 495 Rmp P over Is 95/is 495 Ramp B | Anne Arundel | 191,981 | Good | 2005 |
| Is 95/495 Oll Rp A over Ramps B T Q And H | Prince George's | 191,981 | Good | 2004 |
| Is 95/is 495 Rmp G over Is 95/is 495 Ramp B | Prince George's | 191,981 | Good | 2005 |
| Is 95/is 495 Rmp G over Is 95/is 495 Rmps K P X | Prince George's | 191,981 | Good | 2004 |
| Is 95/is 495 Rmp T over Is 95/is 495 Rmps K P X | Prince George's | 191,981 | Good | 2004 |
| Is 95/is 495 Rmp Q over Beltway Access Parcel RD | Prince George's | 191,981 | Good | 2004 |
| Is 95/is 495 Rmp H over Is 95 Rp V & Beltway Par | Prince George's | 191,981 | Good | 2004 |
| Is 95/is 495 Rmp Q over Is 95/is 495 Ramps B & T | Prince George's | 191,981 | Good | 2006 |
| Natl Harbor N. RD over Is 295 Ramp O | Prince George's | 191,981 | Good | 2008 |
| Is 695 over US 40 | Baltimore | 188,860 | Fair | 1958 |
| Is 95 NB over Csx Transportation | Howard | 187,920 | Fair | 1970 |
| Is 95 SB over Csx Transportation | Howard | 187,920 | Fair | 1970 |
| Is 95 NB over Guilford Road | Howard | 187,920 | Fair | 1970 |
| Is 95 NB over Md 32 Wbr | Howard | 187,920 | Fair | 1970 |
| Is 95nb Cd RD & Rp over Little Paint Branch | Prince George's | 187,850 | Fair | 1971 |
| Is 95 NB over Middle Patuxent River | Howard | 186,750 | Fair | 1970 |
| Is 95 SB over Middle Patuxent River | Howard | 186,750 | Fair | 1970 |
| Is 95 NB over Stansfield RD | Howard | 186,040 | Fair | 1970 |
| Is 95 SB over Stansfield RD | Howard | 186,040 | Fair | 1970 |
| Is 95 NB over Patuxent River | Prince George's | 186,040 | Fair | 1971 |
| Is 95 SB over Patuxent River | Prince George's | 186,040 | Fair | 1971 |
| Is 95 over Henson Creek | Prince George's | 185,190 | Fair | 1962 |
| Is 95 SB over Little Patuxent River | Howard | 184,862 | Fair | 1971 |
| Is 95 over Indian Creek | Prince George's | 183,230 | Fair | 1970 |
| Is 95 SB over Little Paint Branch | Prince George's | 183,230 | Fair | 1971 |
| I-95 over Whitemarsh Run | Baltimore | 181,802 | Fair | 1962 |
| I-95 over Gunpowder Falls | Baltimore | 178,830 | Fair | 1963 |
| I-95 over Little Gunpowder Falls | Baltimore | 178,830 | Fair | 1963 |
| Is 95/ 495 over Md 5 | Prince George's | 177,270 | Fair | 1963 |
| Is 95 over West Branch Herbert Run | Baltimore | 176,834 | Fair | 1969 |
| I-95 over Honeygo Run | Baltimore | 172,113 | Fair | 1963 |
| I-95 over Gunpowder Falls | Baltimore | 172,113 | Fair | 1963 |
| Is 270 over Md 117 | Montgomery | 171,940 | Fair | 1954 |
| I-95 over Redhouse Run | Baltimore | 168,940 | Fair | 1960 |
| Is 95 over East Branch Herbert Run | Baltimore | 165,744 | Fair | 1969 |
| I-95 over Winters Run RD Winters R | Harford | 161,591 | Fair | 1963 |
| Is 595 over Is 97 Ebr | Anne Arundel | 159,360 | Fair | 1987 |
| Is 270 over Gr Seneca CR & Game Pre | Montgomery | 154,247 | Fair | 1954 |
| Is 270 over Md 124 | Montgomery | 154,247 | Fair | 1955 |
| Is 595 over Is 95 | Prince George's | 153,970 | Good | 1958 |
| I-83 over On Ramp From Falls Road | Baltimore | 147,849 | Fair | 1959 |
| Is 95/495 Exp over Is 95/is 495 Ramps B & T | Prince George's | 146,744 | Good | 2007 |
| Is 95/495 O.l. Loc over Ramp Q(1) | Prince George's | 146,744 | Good | 2005 |
| Is 95/495 Exp over Is 95/is 495 Ramp Q | Prince George's | 146,744 | Good | 2008 |
| Is 595 Ramp A over Bald Hill Branch | Prince George's | 144,254 | Good | 1955 |
| Is 95 over Henson Creek | Prince George's | 143,828 | Fair | 1963 |
| Is 95/495 over Md 414 | Prince George's | 143,828 | Fair | 1963 |
| Is 95/495 over Md 414 | Prince George's | 143,828 | Fair | 1963 |
| Is 95/495 Il Local over Is 95/is 495 Ramp Q | Anne Arundel | 141,180 | Good | 2006 |
| Is 95/495 Ol Local over Is 95/is 495 Ramps B & T | Prince George's | 141,180 | Good | 2004 |
| Is 95/495 Il Local over Is 95/is 495 Ramps B & T | Prince George's | 141,180 | Good | 2006 |
| Is 495 Il over Paint Branch | Prince George's | 139,680 | Fair | 1964 |
| Is 495 Ol over Paint Branch | Prince George's | 139,680 | Good | 1964 |
| Is 97 Nbr over Md 3 Business | Anne Arundel | 135,900 | Good | 1990 |
| Is 97 Sbr over Md 3 Business | Anne Arundel | 135,900 | Fair | 1990 |
| Is 95/is 495 over Potomac River | Prince George's | 135,287 | Fair | 2008 |
| Is 595 over Csxt & Collington Branch | Prince George's | 134,833 | Fair | 1992 |
| Is 270 over Middlebrook Road | Montgomery | 133,720 | Fair | 1990 |
| Md 201 NB over Amtrak Ser RD Beaverdam | Prince George's | 132,060 | Fair | 2008 |
| Md 201 SB over Amtrak Ser RD Beaverdam | Prince George's | 132,060 | Good | 2008 |
| I-83 over Padonia Road | Baltimore | 131,750 | Good | 2022 |
| I-95 over James Run | Harford | 130,492 | Fair | 1963 |
| Is 270 Ramp C over Is 270y Ramps B & B3 | Montgomery | 130,450 | Fair | 1958 |
| US 29 NB over US 29 Ramp A (07) | Howard | 130,203 | Fair | 1966 |
| US 29 NB over Frederick Road | Howard | 130,203 | Fair | 1948 |
| US 29 SB over Frederick Road | Howard | 130,203 | Fair | 1966 |
| Is 95/is 495 over Potomac River | Prince George's | 128,275 | Fair | 2006 |
| Is 695 over Md 295 Nbr | Anne Arundel | 128,182 | Fair | 1951 |
| I-83 over Csx Mta Amtrak And Nor | Baltimore | 127,291 | Poor | 1959 |
| Is 595 EB over Md 193 | Prince George's | 124,950 | Fair | 1955 |
| Is 97 over Md 648e Mta Light Rail | Anne Arundel | 124,594 | Fair | 1955 |
| Is 595 over Md 2 Ramp 9 | Anne Arundel | 123,940 | Fair | 1991 |
| Is 595 over Admiral Drive | Anne Arundel | 123,940 | Fair | 1953 |
| Is 595 over Weems Creek | Anne Arundel | 123,940 | Fair | 1953 |
| Is 95 over Moores Run | Baltimore | 121,313 | Fair | 1971 |
| US 50/301 over Boulters Way | Anne Arundel | 121,160 | Fair | 1953 |
| I-83 over Mta And Jones Falls | Baltimore | 120,795 | Fair | 1959 |
| I-83 NB over Mta Light Rail Yard | Baltimore | 117,171 | Fair | 1959 |
| Bw Parkway over Md Route 212 | Prince George's | 117,000 | Fair | 1953 |
| Bw Parkway (nbl) over Md Route 197 (ebl) | Prince George's | 117,000 | Fair | 2001 |
| Bw Parkway (sbl) over Md Route 197 (ebl) | Prince George's | 117,000 | Fair | 2001 |
| Bw Parkway (nbl) over Md Route 197 (wbl) | Prince George's | 117,000 | Fair | 2001 |
| Bw Parkway (sbl) over Md Route 197 (wbl) | Prince George's | 117,000 | Fair | 2001 |
| I-95 over Grays Run | Harford | 116,162 | Good | 1963 |
| Is 495 Ol over Is 270y | Montgomery | 115,850 | Fair | 1996 |
| Is 695 over Patapsco River | Anne Arundel | 114,870 | Fair | 1958 |
| Is 270y Hov Ramp over Is 270y Median | Montgomery | 114,000 | Good | 2003 |
| Is 595 WB over Md 193 | Prince George's | 113,590 | Fair | 1955 |
| Is 595 EB over Folly Branch | Prince George's | 113,590 | Fair | 1955 |
| Is 595 WB over Folly Branch | Prince George's | 113,590 | Fair | 1955 |
| Is 595 over Md 704 | Prince George's | 113,590 | Fair | 1955 |
| Is 495 over Md 187 (old Georgetown R | Montgomery | 113,030 | Good | 1962 |
| Is 95 over Wash. BLVD & Gwynns Fall | Baltimore | 111,945 | Good | 1977 |
| Is 270 over Md 85 (buckeystown Pike) | Frederick | 111,550 | Good | 2020 |
| Is 595 over Md 70 | Anne Arundel | 111,323 | Fair | 1991 |
| Is 95 NB over Csx Rr Bernard DR | Baltimore | 111,060 | Fair | 1976 |
| Is 795 Sbr over Csx Transportation | Baltimore | 110,982 | Fair | 1984 |
| US 50 over Amtrak Wmata | Prince George's | 108,214 | Fair | 1959 |
| Is 95 SB over Csx Rr Yard & Bernard DR | Baltimore | 108,194 | Fair | 1976 |
| I-95 NB Cd over Csx Rr & Bernard DR | Baltimore | 108,194 | Fair | 1980 |
| Md 5 over Coventry Way | Prince George's | 107,592 | Good | 1999 |
| Md 5 (branch Ave) over Md 337 (allentown Road) | Prince George's | 106,842 | Good | 1996 |
| Md 5 (branch Ave) over Md 337 (allentown Road) | Prince George's | 106,842 | Good | 1996 |
| Is 95 SB over Russell ST - Md 295 | Baltimore | 106,447 | Fair | 1977 |
| Is 595 over Md 450 | Anne Arundel | 106,360 | Fair | 1991 |
| Bw Parkway (sbl) over Beaverdam Creek | Prince George's | 106,200 | Fair | 1966 |
| Bw Parkway (nbl) over Beaverdam Creek | Prince George's | 106,200 | Fair | 1966 |
| Bw Parkway over Beaverdam Road | Prince George's | 106,000 | Fair | 1953 |
| Bw Parkway over Beaverdam Creek | Prince George's | 106,000 | Fair | 1953 |
| US 50 over Severn River | Anne Arundel | 105,761 | Fair | 1953 |
| I-83 over Jones Falls (mi. 7.1 To | Baltimore | 105,600 | Poor | 1959 |
| Bw Parkway over Big Patuxent River | Anne Arundel | 105,000 | Fair | 1953 |
| Bw Parkway (nbl) over Little Patuxent River | Anne Arundel | 105,000 | Fair | 1953 |
| Bw Parkway (sbl) over Little Patuxent River | Anne Arundel | 105,000 | Fair | 1953 |
| Good Luck Road over Bw Parkway | Prince George's | 105,000 | Fair | 1952 |
| Bw Parkway (nbl) over Md Route 410 | Prince George's | 105,000 | Fair | 1997 |
| Bw Parkway (sbl) over Md Route 410 | Prince George's | 105,000 | Fair | 1997 |
| Bw Parkway over Stream | Prince George's | 105,000 | Fair | 1953 |
| Is 95 NB over Little Patuxent River | Howard | 104,355 | Fair | 1971 |
| Is 95 Il over Southwest Branch | Prince George's | 102,413 | Fair | 1964 |
| Is 95 Ol over Southwest Branch | Prince George's | 102,413 | Fair | 1964 |
| Is 97 Nbr over Severn Run | Anne Arundel | 102,300 | Fair | 1991 |
| Is 97 Sbr over Severn Run | Anne Arundel | 102,300 | Fair | 1991 |
| Is 97 Nbr over Md 997d | Anne Arundel | 102,300 | Fair | 1989 |
| Is 97 Sbr over Md 997d | Anne Arundel | 102,300 | Good | 1989 |
| Is 595 over Rutland Road | Anne Arundel | 101,670 | Fair | 1950 |
| Is 595 over South River | Anne Arundel | 101,670 | Fair | 1950 |
| Is 595 Ramp 3 over Is 595 | Anne Arundel | 101,670 | Good | 1994 |
| I-95 SB over Campbell Boulevard | Baltimore | 101,372 | Good | 2013 |
| Bw Parkway over Md Route 201 | Prince George's | 101,000 | Good | 1953 |
| Bw Parkway over Csx Railroad | Prince George's | 101,000 | Good | 1953 |
| I-95 over Carsins Run | Harford | 100,386 | Good | 1963 |
| I-95 over Swan Creek | Harford | 100,386 | Fair | 1963 |
| I-95 NB over Campbell Boulevard | Baltimore | 98,960 | Good | 2013 |
| US 29 NB over US 40 | Howard | 98,360 | Fair | 1966 |
| US 29 SB over US 40 | Howard | 98,360 | Fair | 1966 |
| Is 270 over West Old Baltimore RD | Montgomery | 98,097 | Fair | 1954 |
| Is 270 over Little Seneca Creek | Montgomery | 98,097 | Fair | 1954 |
| Is 95/is 495 Rmp R over Ramp Q | Prince George's | 97,959 | Good | 2003 |
| Md 5 NB over Md 223 | Prince George's | 97,872 | Good | 1992 |
| Md 5 SB over Md 223 | Prince George's | 97,872 | Good | 1992 |
| Is 695 Ol over Is 97 | Anne Arundel | 97,630 | Fair | 1957 |
| Bw Parkway over Md Route 202 | Prince George's | 97,000 | Fair | 1953 |
| Is 95 Il over Csx Trans & Wmata | Prince George's | 96,390 | Fair | 1963 |
| Is 95 Ol over Csx Trans & Wmata | Prince George's | 96,390 | Fair | 1963 |
| Md 695 over US 40(pulaski Hwy) | Baltimore | 96,082 | Good | 1996 |
| Md 695 over Csx Railroad | Baltimore | 96,082 | Good | 1995 |
| Md 695 Il over Kelso Drive | Baltimore | 96,082 | Fair | 1969 |
| Md 695 Ol over Kelso Drive | Baltimore | 96,082 | Fair | 1969 |
| I-95 over Md 462 | Harford | 95,675 | Fair | 1963 |
| US 15 & Ramp 8 over Carroll Creek | Frederick | 95,190 | Fair | 1958 |
| US 15 Nbr over US 40/w. Patrick Street | Frederick | 95,190 | Fair | 1958 |
| US 15 Sbr over US 40/w. Patrick Street | Frederick | 95,190 | Fair | 1958 |