| I-66 & Rte. 705 over Trib. of Youngs Branch | 2006 | 119,023 | Fair |
| I-66 over Trib. of Youngs Branch | 2006 | 119,023 | Good |
| I-95 NB over Occoquan River | 1992 | 92,824 | Fair |
| Interstate 95_NBL over Occoquan ROAD_RTE.906 | 1962 | 88,978 | Fair |
| S.b.l. 95 & Hov over Occoquan Road-route 906 | 1962 | 81,223 | Fair |
| I-66 Ebl over Bull Run | 1961 | 80,899 | Fair |
| Interstate 66 EB over Sudley Road | 2006 | 80,899 | Good |
| Nbl Route 0095 over Quantico Creek & Rte 629 | 1963 | 78,993 | Good |
| Route I95 Nbl over Joplin Road | 2001 | 78,993 | Fair |
| I-95 SB over Occoquan River | 1962 | 77,464 | Fair |
| Interstate RT.95SB over Neabsco Creek | 1963 | 75,952 | Poor |
| Sbl Route 0095 over Powells Creek | 1963 | 75,952 | Fair |
| Interstate 95_NBL over Powells Creek | 1963 | 75,042 | Fair |
| Nbl Route 0095 over Neabsco Creek | 1963 | 75,042 | Fair |
| Route I-95 Sbl over Quantico Creek & Rte 629 | 1963 | 73,966 | Good |
| Route I95 Sbl over Joplin Road | 2001 | 73,966 | Good |
| Route I-95 Nbl over Russell Road | 1963 | 68,959 | Fair |
| Route I-95 Sbl over Russell Road | 1963 | 67,708 | Fair |
| Sbl Route 0095 over Chopawamsic Creek | 1963 | 67,708 | Fair |
| Prince Wm. Parkway over I-95 Sbl; Nbl; Hov | 1995 | 67,667 | Fair |
| I-66 WB over Rte 234 Bus | 2020 | 66,907 | Good |
| I-66 Wbl over Bull Run | 1961 | 63,396 | Fair |
| I-66 Wbl over Route 234 - Sudley Road | 1961 | 63,396 | Fair |
| RTE.66 Ebl over RTE.29 | 2008 | 57,759 | Fair |
| RTE.66 Ebl over Ramp G to SB 29 | 2008 | 57,759 | Good |
| Gordon Blvd. over Nb/sb 95_& Hov | 1995 | 57,714 | Fair |
| Centreville Road over Bull Run | 1980 | 49,979 | Poor |
| Dumfries Road over Route I-95 Sbl;hov;nbl | 1996 | 46,090 | Good |
| Ox Road over Occoquan River | 2006 | 46,058 | Fair |
| Linton Hall Road over Route 29 - Lee Highway | 2015 | 44,247 | Good |
| Lee Hwy. & Ramp K over Norfork Southern RR | 2013 | 43,698 | Good |
| Ramp I-66 Exp over I-66 Wbl | 2022 | 42,300 | Good |
| Route 0066 over North Fork | 1979 | 41,849 | Fair |
| Dale Boulevard over Route I-95 | 1983 | 40,886 | Fair |
| Minnieville Road over Neabsco Creek | 1972 | 39,643 | Fair |
| Manassas Bypass over Piney Branch | 2000 | 39,553 | Good |
| Manassas Bypass over Trib of Cannon Branch | 2000 | 39,553 | Fair |
| Manassas Bypass over Trib. of Broad Run | 2000 | 39,553 | Fair |
| Manassas Bypass over Winters Branch | 2000 | 39,553 | Good |
| Jefferson Davis Hy over Powells Creek | 1926 | 39,004 | Fair |
| Jeff Davis Hwy. over Neabsco Creek | 2009 | 38,262 | Good |
| Jeff. Davis Hwy. over Cow Branch | 2015 | 38,262 | Fair |
| Dumfries Road over Occoquan River - 1022 | 2001 | 37,443 | Good |
| Nokesville Road over Broad Run | 2007 | 37,292 | Fair |
| Jefferson Davis Hw over Marumsco Creek | 2018 | 36,639 | Good |
| Manassas Bypass over Dawkins Branch | 1997 | 36,420 | Good |
| Manassas Bypass over Trib. Broad Run | 1996 | 36,420 | Good |
| Old Bridge Road over Hooes Run | 1971 | 36,246 | Fair |
| RTE.15 Nbl Replace over I-66 | 2016 | 35,366 | Good |
| RTE.15 Nbl. over Little Bull Run | 2008 | 35,366 | Good |
| Rte 15-James Madis over Catharpin Run | 2010 | 35,366 | Good |
| Opitz Boulevard over Route 95 | 1982 | 35,000 | Fair |
| Wbl Route 0066 over Lee Highway | 1981 | 32,971 | Fair |
| Wbl Route 0066 over SB Ramp G of Rte 66 | 1981 | 32,971 | Fair |
| I-95 Hov over Occoquan River | 1962 | 31,331 | Fair |
| Prince William Pky over Champs Mill Branch | 1995 | 29,710 | Good |
| Prince William Pky over Occoquan Reservoir | 1994 | 29,710 | Fair |
| Prince William Pky over Trib. of Crooked Creek | 1995 | 27,819 | Good |
| Prince William Pky over Trib. of Crooked Creek | 1995 | 27,819 | Good |
| Linton Hall Rd. over Rocky Run | 2006 | 25,310 | Good |
| Linton Hall Rd. over Trib.of Broad Run | 2007 | 25,310 | Good |
| Linton Hall Road over Tributary of Rocky Br. | 2007 | 25,310 | Good |
| Lee Highway_nb over Broad Run | 1980 | 24,250 | Fair |
| RTE.15/29 over Broad Run | 1953 | 24,250 | Good |
| Pr. William Co Pky over Cabin Run | 2000 | 24,096 | Good |
| Lomond Drive over Flat Branch | 1998 | 23,167 | Good |
| Opitz Boulevard over Tributary of Neabsco Ck. | 1970 | 22,854 | Fair |
| Hov Rmp. Flyover over Route 95 S.b.l. | 1996 | 22,146 | Good |
| Lee Highway NB over North Fork | 1957 | 21,849 | Fair |
| Lee Highway SB over North Fork | 1928 | 21,849 | Good |
| Wbl Route 0066 over Southern Railway | 1980 | 21,136 | Fair |
| Wbl Route 0066 over Thoroughfare Road | 1980 | 21,136 | Fair |
| Rmp B Fr 234N over Trib. of Cannon Branch | 2000 | 20,937 | Good |
| Rte. 234 - Loop C over Trib. of Cannon Branch | 1995 | 20,937 | Good |
| Rte. 28 Ramp C over Gateway Blvd | 1999 | 20,937 | Fair |
| Ebl Route 0066 over Southern Railway | 1980 | 20,713 | Fair |
| Ebl Route 0066 over Thoroughfare Road | 1980 | 20,713 | Fair |
| Linton Hall Road over Broad Run | 2008 | 20,307 | Good |
| Balls Ford Road over Prince William Pkwy | 2023 | 20,000 | Poor |
| 234 Ebl over Rte. 28 Nokesville Rd. | 1997 | 19,776 | Good |
| RTE.234 Nbl over Gateway Blvd. | 1999 | 19,776 | Fair |
| Rte. 234 Nbl over NS Railway | 1999 | 19,776 | Good |
| Rte. 234 Nbl over RTE.28 Nokesville Rd. | 1999 | 19,776 | Good |
| Rte. 234 Sbl over Gateway Blvd | 1999 | 19,776 | Fair |
| Rte. 234 Sbl over NS Railway | 1999 | 19,776 | Good |
| Sudley Manor Dr over Trib. of Broad Run | 2006 | 19,667 | Fair |
| Sudley Manor Dr. over Trib. of Broad Run | 2002 | 19,667 | Fair |
| Sudley Manor Dr. over Trib. of Dawkins Branch | 2004 | 19,667 | Good |
| Ashton Ave over Trib of Holkums Branch. | 1989 | 18,990 | Fair |
| Dumfries Road over Occoquan River (sbl) | 2002 | 18,721 | Good |
| Lee Highway over Bull Run | 1983 | 18,488 | Fair |
| Lee Highway over Dogans Branch | 1935 | 18,488 | Fair |
| Lee Highway over Youngs Branch | 1928 | 18,488 | Fair |
| Lee Highway over Youngs Branch (1011) | 2001 | 18,488 | Good |
| Jeff.davis Hwy Nbl over Occoquan River | 1984 | 18,319 | Fair |
| Jeff.davis Hwy Sbl over Occoquan River | 1975 | 18,319 | Fair |
| 234 Ebl over NS Railway | 1997 | 18,210 | Good |
| 234 Wbl over NS Railway | 1997 | 18,210 | Fair |
| Lomond Drive over Flat Run | 2023 | 18,003 | Good |
| RTE.15 Sbl over Catharpin Creek | 2009 | 17,683 | Good |
| RTE.15 Sbl. over Little Bull Run | 2009 | 17,683 | Good |
| Rte. 15 Nbl over Catharpin Creek | 2009 | 17,683 | Good |
| Rte.15 SBL over I- 66 | 2016 | 17,683 | Good |
| 234 Connector C over Routes 28 & 234 | 1997 | 17,236 | Fair |
| Ramp A Fr Noksvl over RTE.28 & RTE.234 Bypass | 1999 | 17,236 | Fair |
| I-95 Hov over Powells Creek | 1996 | 17,169 | Good |
| Wellington Road over Trib. Broad Run | 1996 | 16,606 | Good |
| Benita Fitzgerald over Trib. of Neabsco Creek | 1997 | 16,085 | Fair |
| Jefferson Davis Hw over Little Creek | 2011 | 15,939 | Good |
| James Madison Hwy over Chestnut Lick Creek | 1941 | 15,542 | Fair |
| James Madison Hwy. over Branch of Chestnut Lick | 1935 | 15,542 | Good |
| I-95 Hov over Quantico Ck. & RTE.629 | 1999 | 14,881 | Good |
| Rmp JHS 95 FLYOVR over Route 95 SB | 2014 | 14,881 | Good |
| Route 95 Hov-hot over Joplin Road | 2014 | 14,881 | Good |
| Route 95 Hov-hot over Russell Road | 2014 | 14,881 | Good |
| James Madison Hwy over Bull Run | 1933 | 14,838 | Fair |
| James Madison Hwy. over Black Branch | 1935 | 14,838 | Fair |
| Wellington Rd. over Trib. of Rocky Branch | 2005 | 14,734 | Good |
| Wellington Rd. over Trib. of Rocky Branch | 1998 | 14,734 | Fair |
| I-66 Ramps F & G over Route 29 & Lee Highway | 2007 | 14,522 | Good |
| Route 1 - Main St. over Cannon Ball Branch | 1995 | 14,518 | Fair |
| Rt 1SB & Main St. over Quantico Creek | 1989 | 14,518 | Fair |
| Hov Ramp to Cm.lot over S.b.l. 95 | 1995 | 14,034 | Good |
| Sudley Manor Dr NB over N.S. Railroad | 2006 | 13,845 | Good |
| Sudley Manor Dr SB over N.S. Railroad | 2006 | 13,845 | Good |
| James Madison Hiwy over North Fork Creek | 1991 | 13,410 | Fair |
| James Madison Hiwy over Tributary of Broad Run | 1965 | 13,410 | Good |
| Williamson Blvd. over Tributary of Bull Run | 1989 | 13,080 | Fair |
| Horner Road over Marumsco Creek | 1973 | 12,508 | Fair |
| Spriggs Road over Powells Creek | 2004 | 12,418 | Good |
| RAMP G from WB 66 over Ramp K | 2015 | 12,158 | Good |
| Waterway Drive over Powells Creek | 1973 | 12,121 | Fair |
| Sudley Rd. over Youngs Branch | 1971 | 11,665 | Good |
| Glenkirk Rd. over Trib. of Rocky Run | 2006 | 11,258 | Good |
| Ramp I-66 EBL Exp over I-66 Ebl | 2021 | 11,000 | Good |
| Vint Hill Road over House Branch | 1921 | 10,562 | Fair |
| Sudley Road over Little Bull Run | 1950 | 10,141 | Fair |
| Rmp.b Flyover Hov over over N.B. RTE.95 | 1995 | 10,000 | Good |
| John Marshall Hwy. over Norfolk Southern RR | 2015 | 9,950 | Good |
| Featherstone Road over Tributary of Farm Creek | 1986 | 9,801 | Fair |
| Heathcote Blvd. over Trib. of Little Bull Run | 1997 | 9,536 | Good |
| Heathcote Blvd. over Trib.of Little Bull Run | 2003 | 9,536 | Fair |
| Heathcote Blvd. over Trib.of Little Bull Run | 2005 | 9,536 | Fair |
| Rippon Boulevard over Tributary of Neabsco Ck. | 1980 | 9,527 | Fair |
| I-95 Hov over Neabsco Creek | 1996 | 9,522 | Good |
| Old Carolina Road over Route 66 | 2015 | 9,403 | Good |
| Sudley Manor Dr. over Broad Run | 2000 | 9,139 | Good |
| Minnieville Road over Powells Creek | 2017 | 8,887 | Good |
| Nokesville Rd. over Kettle Run | 2018 | 8,549 | Good |
| Amherst Drive over Flat Branch | 1962 | 8,544 | Fair |
| Davis Ford Road over Occoquan River | 1959 | 8,489 | Good |
| Cardinal Drive Ebl over I 95 | 1996 | 8,465 | Good |
| Cardinal Drive Wbl over I-95 | 1996 | 8,465 | Good |
| Fuller Heights Rd. over Little Creek | 1999 | 8,064 | Good |
| Rollins Ford Rd. over Trib. of Rocky Branch | 2005 | 8,057 | Good |
| Rollins Ford Rd. over Trib. of Rocky Branch | 2005 | 8,057 | Good |
| Rollins Ford Rd. over Trib. of Rocky Run | 2009 | 8,057 | Good |
| Potomac Center Blv over Trib. of Neabsco Creek | 2007 | 7,760 | Fair |
| Somerset Cros. Dr. over Trib. of North Fork | 2019 | 7,001 | Good |
| Somerset Crossing over Trib of North Fork | 2002 | 7,001 | Good |
| Bristow Road over Cedar Run | 1986 | 6,669 | Fair |
| Fleetwood Drive over Cedar Run | 1991 | 6,408 | Good |
| Purcell Road over Purcell Branch | 1989 | 6,332 | Good |
| Ramp E of I-95 over Old Telegraph Rd. | 1975 | 6,317 | Fair |
| Jeff.davis Hwy. over Quantico Creek | 1987 | 6,202 | Fair |
| Dawson Beach Road over CSX Railway | 1991 | 6,093 | Fair |
| Blackburn Road over Cow Branch | 2012 | 6,073 | Good |
| Wayside Drive over Trib. of Quantico Creek | 1989 | 6,036 | Fair |
| University Blvd over Dawkins Branch | 2024 | 5,999 | Good |
| 234 Bypass Nbl over I-66 | 1997 | 5,954 | Fair |
| Bristow Road over Kettle Run | 1950 | 5,857 | Fair |
| 234 Bypass Sbl over I-66 | 1997 | 5,790 | Good |
| Rte 840-Univ. Blvd over Trib of Broad Run | 2013 | 5,744 | Good |
| University Blvd over Trib. Cannon Branch | 1996 | 5,744 | Good |
| University Blvd. over Tirbutary of Broad Run | 2013 | 5,744 | Good |
| University Blvd. over Trib. Cannon Branch | 1996 | 5,744 | Good |
| University Blvd. over Trib. Cannon Branch | 1996 | 5,744 | Good |
| University Blvd. over Trib. Toms Creek | 1996 | 5,744 | Fair |
| University Blvd. over Trib. of Dawkins Branch | 2004 | 5,744 | Good |
| NB 95 to Rte 123 N over Road Into Parking Lot | 1995 | 5,713 | Good |
| Pageland Lane over Lick Branch | 1969 | 5,658 | Good |
| Pageland Lane over Little Bull Run | 1969 | 5,658 | Fair |
| Hornbaker Road over Trb. To Broad Run | 2013 | 5,364 | Good |
| Jefferson Street over North Fork of Broad Run | 1979 | 5,352 | Fair |
| Aden Road over Kettle Run | 1957 | 5,306 | Fair |
| EB Ramp to Parkway over Pr. Wm. Co. Parkway | 1992 | 5,089 | Good |
| Aden Road over Cedar Run | 1982 | 5,046 | Good |
| Catharpin Road over Catharpin Run | 1965 | 5,022 | Fair |
| Catharpin Road over I-66 | 2016 | 5,022 | Good |
| Catharpin Road over Little Bull Run | 1964 | 5,022 | Fair |
| Russell Road over US-1 | 1958 | 5,000 | Fair |
| Darbydale Avenue over Neabsco Creek | 1973 | 4,969 | Fair |
| Old Carolina Rd. over Little Bull Run | 2009 | 4,701 | Good |
| Groveton Road over Youngs Branch | 1962 | 4,667 | Fair |
| Lindendale Road over Tributary of Neabsco Ck. | 1983 | 4,655 | Fair |
| Montgomery Avenue over Tributary of Neabsco Ck. | 1972 | 4,639 | Fair |
| Groveton Rd over Is-00066-e & Is-00066-w | 1999 | 4,505 | Good |
| John Marshall Hwy. over Broad Run | 1972 | 4,182 | Fair |
| Denver Drive over Drainage | 2020 | 4,100 | Good |
| Century Park Dr. over I-66 Future Metro Rail | 2022 | 4,000 | Good |
| Lake Jackson Drive over Cabin Run | 2002 | 3,836 | Good |
| Rollins Ford Rd EB over Broad Run | 2014 | 3,800 | Good |
| Rollins Ford Rd WB over Broad Run | 2014 | 3,700 | Good |
| Lexington Valley D over Trib.of Dawkins Branch | 2001 | 3,691 | Fair |
| Lucasville Road over Tributary of Broad Run | 2012 | 3,431 | Good |
| Lucasville Road over PrinceWilliams Pkwy 234 | 2000 | 3,392 | Fair |
| Glenkirk Road over Broad Run | 1970 | 3,365 | Fair |
| Fleetwood Drive over Slate Run | 1978 | 3,235 | Good |
| Railroad Drive over Russia Branch Culvert 1 | 1992 | 3,200 | Good |
| Lucasville Road over Broad Run | 1998 | 3,129 | Good |
| Valley View Drive over Kettle Run | 1945 | 3,123 | Fair |
| Victory Lakes Loop over Trib. of Broad Run | 2001 | 3,093 | Good |
| Waverly Farm Dr. over Catharpin Creek | 2006 | 3,070 | Good |
| Richmond Sta Dr. over Trib Russia Branch | 2019 | 3,000 | Good |
| Russell Road over Chopawamsic Creek | 1958 | 3,000 | Fair |
| Russell Road over Chopawamsic Creek | 2011 | 3,000 | Good |
| Godwin Drive over Trib. of Broad Run | 2000 | 2,982 | Fair |
| Antioch Road over Route I-66 | 1979 | 2,931 | Fair |
| Kettle Run Road over Kettle Run | 2000 | 2,916 | Good |
| Delaney Road over Neabsco Creek | 1955 | 2,832 | Good |
| Brentsville Road over Broad Run | 1957 | 2,829 | Good |
| Joplin Road over South Fork Quantico Ck. | 2021 | 2,827 | Good |
| Aden Road over NS Railway | 1882 | 2,769 | Good |
| Aden Road over Norfolk Southern RR | 2016 | 2,769 | Good |
| Farm Creek Drive over Farm Creek | 1986 | 2,704 | Fair |
| Janet Rose Ct. over Trib. of Buckhall Br. | 2007 | 2,642 | Good |
| Potomac Mills Road over NW Ramp E of Rt I-95 | 1975 | 2,545 | Fair |
| Rte.1529 over Tributary of Bull Run | 2014 | 2,522 | Good |
| Logmill Road over Chestnut Lick | 2015 | 2,444 | Good |
| Old Triangle Road over Little Creek | 2023 | 2,430 | Good |
| Northgate Drive over Powells Creek | 1973 | 2,421 | Fair |
| University Blvd. over I-66 & Norfolk Sou. RR | 2006 | 2,362 | Good |
| University Blvd. over Trib. of Broad Run | 2005 | 2,362 | Good |
| Clover Hill Road over Trib. of Broad Run | 2000 | 2,359 | Fair |
| Godwin Dr. RTE.661 over Trib. of Broad Run | 2006 | 2,322 | Good |
| Chanceford Drive over Trib. of Occoquan River | 2005 | 2,184 | Good |
| Hylton Ave. over Marumsco Creek | 1954 | 2,157 | Fair |
| Airport Access Rd. over Cannon Branch | 2005 | 2,044 | Good |
| Airport Access Rd. over Trib. of Cannon Branch | 2005 | 2,044 | Good |
| Airport Access Rd. over Winters Branch | 2005 | 2,044 | Fair |
| Harry J Parrish BL over Cockrell Branch | 2000 | 2,044 | Fair |
| Bauer Road over Chopawamsic Creek | 1968 | 2,000 | Fair |
| Range Road over Csxt Railroad | 1994 | 2,000 | Good |
| Meadowgate Drive over Purcell Branch | 1999 | 1,823 | Fair |
| Rugby Road East over Tributary of Bull Run | 1991 | 1,815 | Fair |
| Burr Lane over Trib. of Lake Omisol | 1990 | 1,658 | Good |
| Champlain Drive over Trib. of Purcell Branch | 1999 | 1,548 | Good |
| Waterfall Road over Catharpin Creek | 1961 | 1,475 | Fair |
| River Forest Drive over Crooked Creek | 1992 | 1,391 | Good |
| Old Church Road over Slate Run | 1995 | 1,315 | Good |
| Fitzwater Drive over Kettle Run | 1989 | 1,305 | Good |
| Fitzwater Rd. over South Run | 1968 | 1,305 | Fair |
| NB Ramp to NB 95 over Road to Parking Lot | 1995 | 1,228 | Good |
| Ramp to N.B. 95 over Trib. of Occoquan Rvr. | 1995 | 1,228 | Fair |
| Geiger Road over Little Creek | 1942 | 1,200 | Fair |
| Manassas Forge Dr. over Buckhall Branch | 1990 | 1,173 | Good |
| Mcb-1 over N Branch Chopawamsic Crk | 1985 | 1,000 | Fair |
| S.B. Flyover Ramp over S.b.l. RTE.95 | 1995 | 1,000 | Fair |
| Thomasson Barn rd. over Trib. Broad Run | 2019 | 900 | Good |
| Easy Street over Marumsco Creek | 1994 | 756 | Fair |
| Lightner Road over Catharpin Run | 2012 | 621 | Good |
| Windsor Rd over Little Creek | 1946 | 600 | Fair |
| Turner Road over Route I-66 | 1980 | 578 | Fair |
| Parkgate Drive over Slate Run | 1990 | 508 | Good |
| Mountain Road over Catharpin Creek | 2012 | 507 | Good |
| Church Hill Dr. over Marumsco Creek | 2006 | 500 | Good |
| Fairmont Avenue over Trib. of Flat Branch | 2014 | 500 | Good |
| Hope Hill Ave over Trib of Powells Creek | 2010 | 500 | Good |
| Kramer estate Dr. over Powells Creek | 2011 | 500 | Good |
| Little Road over Little Creek | 1952 | 500 | Fair |
| Mcb-1 over Cedar Run | 1947 | 500 | Fair |
| Mcb-3 over Darrells Run | 1994 | 500 | Good |
| Mcb-8 over Branch of Cedar Run | 1947 | 500 | Fair |
| Mcb-8 over Goose Run | 1947 | 500 | Poor |
| Mcb-8 over Lucky Run | 1947 | 500 | Fair |
| Aldie Road over Branch of Bull Run | 1932 | 485 | Fair |
| Scenic Pointe Pl. over Champs Mill Branch | 1995 | 485 | Good |
| Worthington Drive over Rocky Branch | 1995 | 430 | Fair |
| Scenic Drive over South Fork Quantico Cree | 1940 | 420 | Fair |
| Scenic Drive over South Fork Quantico Cree | 1970 | 420 | Good |
| Scenic Drive over South Fork Quantico Cree | 1970 | 420 | Fair |
| Montega Dr. over Trib of Neabsco Creek | 2004 | 351 | Good |
| Passage Creek La. over Trib.of Powells Creek | 2006 | 345 | Fair |
| Manley Rd. over Br Kettle Run | 1986 | 336 | Good |
| Possum Point Road over CSX Railway | 1947 | 319 | Fair |
| Sly Fox Lane over Purcell Branch | 1994 | 314 | Fair |
| Whitting Drive over Tributary of Occoquan Rv | 1982 | 293 | Good |
| Delashmutt Dr. over Chestnut Lick Branch | 1974 | 276 | Fair |
| Formby Street over Tributary of Dawkins Br. | 2002 | 251 | Good |
| Robin Drive over Catharpin Run | 1965 | 242 | Fair |
| Simmons Grove Dr. over Trib.of Little Bull Run | 2005 | 220 | Good |
| Artemus Road over Little Bull Run | 1994 | 201 | Fair |
| Julian Drive over Martin Street | 1942 | 200 | Fair |
| Ingram Drive over Chestnut Lick Run | 1988 | 185 | Good |
| Reid Lane over Kettle Run | 1992 | 175 | Good |
| Thoroughfare Road over Trib of Lake Manassas | 2021 | 152 | Good |
| Lake Drive over Trib. Bull Run | 1998 | 148 | Good |
| Pageland Lane over Trib. of Catharpin Run | 1962 | 138 | Good |
| Logmill Road over Chestnut Lick Run | 1984 | 122 | Fair |
| Cabin Ridge Court over Trib. of Cabin Run | 1992 | 120 | Fair |
| Anchor Mill PL. over Trib. of Rocky Branch | 2006 | 115 | Good |
| Lonesome Road over Kettle Run | 1950 | 100 | Fair |
| Boutilier Lane over Piney Branch | 2000 | 99 | Good |
| Thoroughfare Road over Tributary of North Fork | 1963 | 81 | Fair |
| Buckland Mill Road over South Run | 1969 | 57 | Fair |
| Maureen Cad. Way over Little Creek | 2019 | 50 | Good |
| Van Buren Road over Quantico Creek | 1963 | 43 | Fair |
| Taylor Point Road over Unnamed Drainage | 2001 | 20 | Good |