| I 55 over Minnehaha Creek | 1960 | 22,000 | Good |
| I 55 over Tangipahoa River Relief | 1960 | 18,000 | Fair |
| I 55 over Tangipahoa River Trib | 1960 | 18,000 | Good |
| US 98 over Cnic RR | 1940 | 18,000 | Fair |
| US 98 over Unnamed Stream | 1939 | 18,000 | Fair |
| I 55 over SR 570 | 1959 | 14,500 | Fair |
| I 55 over SR 570 | 1959 | 14,500 | Fair |
| SR 24 over Little Tangipahoa River | 1976 | 14,000 | Good |
| SR 24 over Unnamed Stream | 1939 | 14,000 | Good |
| I 55 over Little Tangipahoa River | 1959 | 13,000 | Good |
| I 55 over Little Tangipahoa River | 1959 | 13,000 | Good |
| I 55 over SR 24/US 98 East | 1959 | 12,000 | Fair |
| I 55 over SR 24/US 98 East | 1959 | 12,000 | Good |
| I 55 over Beaver Creek | 1965 | 11,500 | Fair |
| I 55 over Beaver Creek | 1965 | 11,500 | Fair |
| US 51 over Clear Creek | 2000 | 11,000 | Good |
| I 55 over Tangipahoa River | 1960 | 9,000 | Fair |
| I 55 over Tangipahoa River | 1960 | 9,000 | Fair |
| SR 48 over Little Tangipahoa River | 1971 | 7,300 | Good |
| US 51 over Unnamed Creek | 2002 | 7,300 | Good |
| SR 908 over Cnic RR | 1999 | 6,900 | Good |
| US 51 over Stream | 1933 | 6,400 | Fair |
| US 51 over Unnamed Stream | 1933 | 6,400 | Poor |
| US 51 over Stream | 1933 | 5,900 | Fair |
| US 51 over Unnamed Stream | 1933 | 5,900 | Good |
| SR 24 over Tangipahoa River | 1993 | 5,700 | Good |
| SR 24 over Tangipahoa River Relief | 1993 | 5,700 | Good |
| SR 24 over Tangipahoa River Trib | 1939 | 5,700 | Good |
| SR 48 over Minnehaha Creek | 1952 | 5,700 | Fair |
| US 98 over I 55 | 1959 | 5,400 | Fair |
| SR 48 over Unnamed Stream | 1972 | 5,200 | Good |
| SR 44 over Bogue Chitto River | 1960 | 4,700 | Fair |
| SR 44 over Clear Creek | 1982 | 4,700 | Good |
| US 51 over Little Tangipahoa Relief | 1997 | 4,400 | Good |
| US 51 over Little Tangipahoa Relief | 1997 | 4,400 | Good |
| US 51 over Little Tangipahoa River | 1997 | 4,400 | Good |
| Pearl River Avenue over Cn Railroad | 1973 | 3,940 | Fair |
| Pearl River Avenue over Town Creek | 1973 | 3,940 | Good |
| US 98 over Bogue Chitto River | 1987 | 3,850 | Good |
| US 98 over Bogue Chitto River | 1987 | 3,850 | Good |
| S Magnolia Street over Small Stream | 1982 | 3,410 | Good |
| SR 570 over Little Tangipahoa River | 1982 | 3,300 | Good |
| US 98 over Tangipahoa River | 1959 | 3,300 | Good |
| Old Hwy 24 over Martin Creek | 1981 | 2,810 | Fair |
| Delaware Avenue over I 55 | 1959 | 2,700 | Fair |
| Park Drive over I 55 | 1959 | 2,700 | Good |
| SR 570 over Bogue Chitto River | 1963 | 2,700 | Fair |
| SR 570 over Mocassin Creek | 1983 | 2,700 | Good |
| SR 570 over Three Mile Branch | 1983 | 2,700 | Good |
| SR 570 over Clear Creek | 1983 | 2,400 | Fair |
| Delaware Ave. Ext over Little Tangipahoa River | 1969 | 2,200 | Good |
| Park Drive over Little Tangipahoa River | 1954 | 1,800 | Fair |
| US 51 over Lake Dixie Springs | 2011 | 1,800 | Good |
| Old Brookhaven Rd. over Beaver Creek | 1983 | 1,700 | Fair |
| US 51 over Minnehaha Creek | 2011 | 1,700 | Good |
| US 51 over Tangipahoa Relief | 2011 | 1,700 | Good |
| US 51 over Tangipahoa River | 2011 | 1,700 | Good |
| Old Brookhaven Rd. over Roberts Creek | 1983 | 1,600 | Fair |
| SR 48 over Bala Chitto Creek | 1982 | 1,500 | Good |
| SR 48 over Bala Chitto Relief | 1982 | 1,500 | Good |
| SR 48 over Bala Chitto Relief | 1982 | 1,500 | Good |
| Summit-holmesville over Clear Creek | 1968 | 1,500 | Poor |
| SR 44 over Topisaw Creek | 1958 | 1,400 | Fair |
| Magnolia-progress over Bala Chitto Creek | 1979 | 1,320 | Fair |
| Ernwood Road over Martin Creek | 2023 | 1,300 | Good |
| Fernwood Road over I 55 | 1961 | 1,300 | Fair |
| SR 568 over I 55 | 1960 | 1,300 | Good |
| SR 568 over Terrys Creek | 1942 | 1,300 | Good |
| Johnston Stat. Rd. over Clabber Creek | 1959 | 1,200 | Fair |
| Airport-fernwood over Minnehaha Creek | 2007 | 1,140 | Good |
| Osyka Progress Rd. over Relief Tangipahoa River | 2001 | 1,100 | Good |
| Osyka Progress Rd. over Tangipahoa River | 1982 | 1,100 | Fair |
| Fernwood Road over Little Tangiaphoa River | 2014 | 1,085 | Good |
| Robb Street over I 55 | 1959 | 900 | Good |
| Hwy. 570 North Ext over West Topisaw Creek | 1972 | 850 | Fair |
| Enterprise Road over I 55 | 1959 | 810 | Good |
| M. L. King Dr Ext. over Small Stream | 1989 | 800 | Good |
| SR 584 over I 55 | 1965 | 790 | Good |
| SR 584 over Terrys Creek | 1997 | 790 | Good |
| M. L. King Dr Ext. over Clear Creek | 1989 | 750 | Fair |
| Prewett Street over Minnehaha Creek | 2003 | 750 | Fair |
| Old Hwy 24 over Small Drain | 1988 | 710 | Good |
| SR 48 over NW Ramp I 55 | 1960 | 710 | Good |
| US 51 over Stream | 2011 | 700 | Good |
| Alford Bridge Rd. over Bogue Chitto River | 1959 | 690 | Fair |
| Meadville Street over Canadian National RR | 2004 | 675 | Fair |
| C.d. Rayborn Road over Dog River | 1983 | 650 | Fair |
| Hamp Lea Road over Tangipahoa River | 1964 | 650 | Fair |
| Old Hwy 24 over Small Drain | 1935 | 650 | Fair |
| Hamp Lea Road over Relief Tangipahoa River | 1977 | 630 | Fair |
| N Cherry Street over Town Creek | 1960 | 620 | Fair |
| Osyka Progress Rd. over Bala Chitto Creek | 1991 | 610 | Fair |
| Osyka Progress Rd. over Relief Bala Chitto Riv | 1991 | 610 | Fair |
| River Road South over No Name Creek | 1988 | 590 | Fair |
| River Road North over No Name Creek | 2009 | 520 | Good |
| Summit St. over Small Drain | 2009 | 500 | Fair |
| Georgia Ave. over Small Drain | 2009 | 470 | Fair |
| South Locust St. over Small Drain | 1975 | 470 | Fair |
| First Road West over Terrys Creek | 1962 | 460 | Fair |
| Michigan Ave. over Small Drain | 2009 | 460 | Good |
| New York Ave. over Small Drain | 2009 | 460 | Fair |
| Enterprise Road over Little Tangipahoa River | 1965 | 450 | Fair |
| Irene Road over Small Creek | 2004 | 440 | Good |
| Irene Road over Small Creek | 1991 | 440 | Poor |
| Muddy Springs Road over Relief Tangipahoa River | 1965 | 430 | Poor |
| Muddy Springs Road over Small Creek | 2004 | 430 | Good |
| Muddy Springs Road over Tangipahoa River | 1965 | 430 | Fair |
| SR 575 over Creek | 2017 | 420 | Good |
| SR 575 over Creek | 2017 | 420 | Good |
| SR 575 over Silver Spring Creek | 1998 | 420 | Good |
| Hamp Lee Road over I 55 | 1960 | 410 | Good |
| Pike Road 93 N over Bogue Chitto River | 1963 | 410 | Poor |
| Pike Road 93 S. over Forest Branch | 2007 | 390 | Good |
| Johnston Stn Road over Beaver Creek | 2012 | 370 | Fair |
| Dogwood Trail over Bars Branch | 1977 | 360 | Fair |
| Pike Road 93 C. over Love Creek | 1963 | 360 | Fair |
| SR 48 over I 55 | 1960 | 355 | Fair |
| SR 48 over I 55 | 1960 | 355 | Good |
| Centerville Road over Tan Creek | 1994 | 350 | Good |
| Mt. Herman Road over Silver Springs Creek | 2007 | 350 | Fair |
| N Caston Street over Small Stream | 1945 | 350 | Good |
| Pike Road 93 S. over Bala Chitto Creek | 1968 | 350 | Fair |
| Hamp Lea Road over Relief Tangipahoa River | 1977 | 340 | Fair |
| Mccomb-holmesville over Large Drain | 2013 | 330 | Good |
| Grant Street over Canadian National RR | 1992 | 320 | Fair |
| Pike Road 93 C. over Bars Branch | 1967 | 320 | Good |
| Mccomb-holmesville over Small Drain | 1969 | 310 | Good |
| Cole Thomas Road over Clear Creek | 1997 | 300 | Fair |
| Pike Road 93 S. over Large Drain | 1969 | 300 | Fair |
| River Road North over Lazy Creek | 1964 | 300 | Fair |
| Van Norman Curve over Small Drain | 2001 | 300 | Fair |
| Chatawa Road over I 55 | 1965 | 280 | Good |
| Cole Thomas Road over Clear Creek | 1985 | 280 | Fair |
| County Line Road over I 55 | 1965 | 280 | Good |
| Elarton Road over I 55 | 1965 | 280 | Good |
| First Road West over I 55 | 1965 | 280 | Good |
| Turnpike Road over Topisaw Creek | 1981 | 251 | Good |
| Enterprise Road over Tangipahoa River | 1976 | 250 | Good |
| Summit-holmesville over Small Drain | 1975 | 245 | Fair |
| Old Liberty Road over I 55 | 1960 | 230 | Fair |
| Leatherwood Road over Topisaw Creek | 2015 | 215 | Good |
| Smithburg Road over Silver Springs Creek | 2004 | 210 | Good |
| Stewart Mill Road over Clear Creek | 2000 | 210 | Good |
| Dudley Rimes Road over Small Creek | 1958 | 200 | Good |
| Leatherwood Road over Leatherwood Creek | 1985 | 200 | Fair |
| Leatherwood Road over Small Creek | 1978 | 180 | Poor |
| Schmitt Road over Small Creek | 1999 | 180 | Good |
| Tanglewood Road over Bala Chitto Creek | 1972 | 175 | Poor |
| East Fernwood Rd. over Small Creek | 2001 | 170 | Good |
| High Point Road over Clabber Creek | 1994 | 160 | Fair |
| Old Liberty Road over Little Tangipahoa River | 2009 | 160 | Good |
| Von Beard Lane over Clear Creek | 1996 | 160 | Good |
| Wardlow Road over I 55 | 1960 | 160 | Good |
| Willis Cotton Road over Haymans Creek | 2004 | 160 | Good |
| Love Creek Drive over Love Creek | 2015 | 155 | Good |
| Martin Road over Tangipahoa River | 1995 | 155 | Fair |
| Mckenzie Road over Martin Creek | 1970 | 155 | Fair |
| Martin Road over Relief Tangipahoa River | 1996 | 150 | Good |
| Stewart Mill Road over Large Drain | 1978 | 140 | Fair |
| Friendship Road over Small Creek | 1969 | 135 | Fair |
| Cowart-price Road over Carters Creek | 1983 | 130 | Fair |
| Holden Road over Little Tangipahoa River | 2015 | 130 | Fair |
| Irma Drive over Bala Chitto Creek | 2018 | 130 | Fair |
| Spears Road over Terrys Creek | 1997 | 130 | Poor |
| Tanglewood Road over Bala Chitto Creek | 1992 | 130 | Good |
| Wardlaw Road over Little Tangipahoa River | 2008 | 130 | Good |
| Berthadale Road over Small Drain | 2006 | 125 | Good |
| Brent Road over Topisaw Creek | 2019 | 125 | Good |
| Mckenzie Road over Small Drain | 2020 | 125 | Good |
| Emerald-stateline over Large Drain | 2011 | 120 | Good |
| Emerald-stateline over Small Drain | 2007 | 120 | Good |
| Robert Jones Road over Tangipahoa River | 2001 | 120 | Good |
| Lazy Hefier Road over Small Drain | 1998 | 115 | Good |
| Mccomb-holmesville over Small Creek | 1986 | 115 | Fair |
| Old 51 South over Small Drain | 2013 | 115 | Fair |
| Church Road over Small Creek | 2007 | 110 | Fair |
| Foxchase Road over Mcnab Creek | 2019 | 110 | Good |
| Silver Drive over Large Drain | 1999 | 110 | Fair |
| Church Road over Terrys Creek | 1981 | 105 | Fair |
| Chester Reeves Rd. over Small Creek | 2007 | 100 | Good |
| First Road West over Small Drain | 1965 | 100 | Poor |
| St. Mary Road over Tangipahoa River | 2013 | 99 | Good |
| Terrys Creek Road over Small Creek | 1970 | 95 | Fair |
| Terrys Creek Road over Terrys Creek Relief | 1980 | 95 | Fair |
| Old 51 South over Large Creek | 2013 | 90 | Good |
| Joe Tucker Road over Silver Springs Creek | 1993 | 85 | Poor |
| South Yard Road over Town Creek | 1996 | 85 | Good |
| Adams Road over Town Creek | 2015 | 80 | Good |
| Gladhurst Road over Bala Chitto Creek | 1998 | 80 | Fair |
| Raborn Road over Small Creek | 2014 | 80 | Good |
| Clem Nettles Road over Small Drain | 2004 | 75 | Good |
| Dykes-walthall Rd. over Silver Creek | 2020 | 75 | Good |
| Fortenberry Road over Small Drain | 2001 | 75 | Fair |
| Silver Drive over Silver Springs Creek | 1999 | 75 | Good |
| W. Topisaw South over Small Drain | 1970 | 75 | Fair |
| Silver Drive over Silver Creek | 2003 | 70 | Good |
| Cutrer Drive over Terrys Creek | 1991 | 65 | Poor |
| School Street over Small Stream | 2018 | 65 | Good |
| Glen Carter Road over Terrys Creek | 1969 | 60 | Fair |
| Hamilton Street over Small Creek | 2023 | 60 | Good |
| Progress-lexie Rd. over Small Creek | 2005 | 60 | Fair |
| Blazo Road over Large Drain | 2017 | 55 | Fair |
| Fred Bacot Road over Lazy Creek | 2000 | 55 | Good |
| Jewel Drive over Small Creek | 2006 | 55 | Good |
| Lablanc Road over Small Creek | 1987 | 55 | Fair |
| Line Creek Road over Trinity Creek | 2003 | 55 | Good |
| Magnlia-holmesvill over Bars Branch | 1992 | 55 | Fair |
| Union Church Road over Love Creek | 2014 | 55 | Fair |
| Boyd-reeves Road over Carters Creek | 1982 | 50 | Poor |
| Lindbergh Road over Small Creek | 2001 | 50 | Good |
| Welsh Road over Small Drain | 2003 | 50 | Good |