Scour-Critical Bridges in New York

New York has 796 bridges rated scour-critical by the Federal Highway Administration. These bridges have foundations that are unstable or at risk of undermining during flood events. Scour-critical doesn't mean a bridge is about to collapse — it means extra monitoring and countermeasures are in place — but these structures are priorities for repair or replacement.

How this ranking works

This state list filters to NBI scour ratings 0 through 3, then sorts by average daily traffic. It is intended to show flood-vulnerability exposure, not to label any bridge as currently unsafe.

Bridge	County	Scour Rating	Daily Traffic	Condition
RTE 907p over Harlem Rvr Shore	New York	3 — Serious	82,471	Fair
RTE 987d over Saw Mill River	Westchester	3 — Serious	43,153	Poor
RTE 987d over Saw Mill River	Westchester	3 — Serious	42,645	Fair
RTE 907g over Bronx River	Westchester	3 — Serious	26,325	Fair
RTE 908c over Reynolds Channel	Nassau	3 — Serious	25,774	Fair
Cross River DR over Peconic River	Suffolk	3 — Serious	25,454	Fair
Montauk HWY over Shinnecock Canal	Suffolk	3 — Serious	22,230	Fair
Daly Boulevard over Simonsons Channel	Nassau	3 — Serious	22,162	Fair
RTE 303 over Sparkill Creek	Rockland	3 — Serious	20,253	Fair
RTE 303 over Sparkill Creek	Rockland	3 — Serious	18,465	Fair
RTE 901 over Rockaway Inlet	Queens	3 — Serious	18,260	Fair
RTE 23 over Csx Trans/amtrak Hudson	Greene	3 — Serious	18,162	Poor
Atlantic Bch Br over Reynolds Channel Roadwa	Nassau	3 — Serious	18,147	Fair
Madison Avenue over Chemung River	Chemung	3 — Serious	16,935	Good
907g NB over Bronx River	Westchester	3 — Serious	14,760	Fair
RTE 1 over Byram River	Westchester	3 — Serious	14,570	Poor
RTE 52 over Gayhead Pond Inlt	Dutchess	3 — Serious	12,935	Fair
RTE 94 over Meadow Stream	Orange	3 — Serious	12,909	Fair
RTE 32 over Quassiac Creek	Orange	3 — Serious	12,339	Good
RTE 967 over Quassaic Creek	Orange	3 — Serious	11,671	Poor
Noyack Road over Fish Cove	Suffolk	3 — Serious	11,515	Fair
RTE 146 over Normans Kill	Albany	3 — Serious	11,427	Fair
RTE I88 over Trb Cornell Creek	Chenango	3 — Serious	10,908	Poor
RTE 25 over Mill Creek	Suffolk	3 — Serious	10,635	Fair
Borden Road over Cayuga Creek	Erie	3 — Serious	10,449	Fair
Montauk Highway over Quantuck Creek	Suffolk	3 — Serious	9,775	Fair
RTE 40 over Deepkill Creek	Rensselaer	3 — Serious	9,527	Fair
Branch Boulevard over Mott Creek	Nassau	3 — Serious	9,430	Fair
Bowen Road over Cayuga Creek	Erie	3 — Serious	9,264	Fair
RTE 11 over Tioughnioga River	Broome	3 — Serious	9,205	Fair
Pine Brook BLVD NB over Sheldrake River	Westchester	3 — Serious	9,181	Fair
RTE 32 over Woodbury Creek	Orange	3 — Serious	9,130	Fair
South Park Avenue over Buffalo River	Erie	3 — Serious	9,043	Poor
Little Britain RD over Quassaic Creek	Orange	3 — Serious	8,970	Poor
Baird Road over Thomas Creek	Monroe	3 — Serious	8,932	Fair
RTE 930a over Ley Creek	Onondaga	3 — Serious	8,922	Fair
RTE 9d over Phillipse Brook	Putnam	3 — Serious	8,815	Fair
RTE 908j over Great South Bay	Suffolk	3 — Serious	8,443	Fair
RTE 908j over Great South Bay	Suffolk	3 — Serious	8,443	Good
RTE 12 over Gilbert Creek	Broome	3 — Serious	8,430	Fair
County Road 306 over Annsville Creek	Westchester	3 — Serious	8,410	Poor
Midland Avenue over Bronx River	Westchester	3 — Serious	8,381	Fair
RTE 17a over Wawayanda Creek	Orange	3 — Serious	8,153	Fair
East Circle RD over Darlenes Brook Darlene	Onondaga	3 — Serious	7,651	Good
Halstead Avenue over Mamaroneck River	Westchester	3 — Serious	7,311	Fair
RTE 340 over Sparkill Creek	Rockland	3 — Serious	6,609	Poor
County Road 64 over Singsing Creek	Chemung	3 — Serious	6,547	Fair
River Street Ext over Outlet Brook	Essex	3 — Serious	6,437	Poor
Dyke Road over Ferguson Creek Ferguson	Herkimer	3 — Serious	6,235	Poor
Ponquogue Av over Shinnecock Bay	Suffolk	3 — Serious	5,676	Fair
RTE 199 over Saw Kill	Dutchess	3 — Serious	5,635	Poor
Middle Road over Browns Creek	Suffolk	3 — Serious	5,389	Good
Wilder Road over Salmon Creek	Monroe	3 — Serious	5,348	Fair
County Road 133 over Skaneateles Creek	Onondaga	3 — Serious	5,288	Good
RTE 987h over Hunter Brook	Westchester	3 — Serious	5,080	Fair
Long Beach RD over Reynolds Channel	Nassau	3 — Serious	5,026	Fair
Long Beach RD over Reynolds Channel	Nassau	3 — Serious	5,026	Fair
Penora Street over Cayuga Creek	Erie	3 — Serious	5,008	Fair
Kings Highway over Sparkill Creek	Rockland	3 — Serious	4,830	Poor
Main Street over Keuka Lake Outlet Pedes	Yates	3 — Serious	4,826	Good
Main Street over Big Choconut Creek	Broome	3 — Serious	4,793	Fair
RTE 22 over Stone Hill River	Westchester	3 — Serious	4,712	Fair
RTE 208 over Tin Brook	Orange	3 — Serious	4,678	Poor
RTE 55 over Deuel Hollow Brk	Dutchess	3 — Serious	4,566	Fair
CR 88 over Nine Mile Creek	Oneida	3 — Serious	4,527	Fair
Mill Street over Shrub Oak Brook	Westchester	3 — Serious	4,496	Fair
County Road 8 over Chemung River	Chemung	3 — Serious	4,369	Good
Drewville Road over West Branch Croton River	Putnam	3 — Serious	4,333	Good
County Road 21 over Jackson Creek	Dutchess	3 — Serious	4,302	Poor
Furnace Dock Road over Furnace Brook	Westchester	3 — Serious	4,000	Fair
Prospect Street over N Chuctanunda Ck	Montgomery	3 — Serious	3,960	Poor
RTE 19 over Black CR Overflow	Genesee	3 — Serious	3,816	Poor
RTE 308 over Landsman Kill	Dutchess	3 — Serious	3,746	Fair
RTE 17c over Ellis Creek	Tioga	3 — Serious	3,708	Fair
RTE 209 over Pine Kill	Sullivan	3 — Serious	3,645	Poor
South Road over Beaver Dam Creek	Suffolk	3 — Serious	3,631	Good
RTE 174 over Ninemile Creek	Onondaga	3 — Serious	3,616	Fair
Swezey Street over Swan River	Suffolk	3 — Serious	3,549	Good
Westchester Ave. over Stamford Mill River	Westchester	3 — Serious	3,441	Fair
County Road 23b over Catskill Creek	Greene	3 — Serious	3,422	Fair
RTE 32 over Kistatom Creek	Greene	3 — Serious	3,247	Fair
Tompkins AVE over Mamaroneck River	Westchester	3 — Serious	3,122	Poor
South Country RD over Speonk River	Suffolk	3 — Serious	3,092	Good
East Lake Road over Mill Creek	Ontario	3 — Serious	3,022	Poor
County Road 115 over S B Glendening Ck	Steuben	3 — Serious	2,998	Poor
Mahopac Avenue over Muscoot River	Westchester	3 — Serious	2,991	Fair
RTE 11 over Trout River	Franklin	3 — Serious	2,960	Good
Convent Road over Tappan Lake	Rockland	3 — Serious	2,892	Fair
RTE 301 over West Branch Croton River	Putnam	3 — Serious	2,874	Fair
RTE 5 over E Canada Creek	Herkimer	3 — Serious	2,866	Poor
County Road 149 over Litt Beaver Kill	Sullivan	3 — Serious	2,839	Fair
North Manlius Road over Limestone Creek	Onondaga	3 — Serious	2,829	Fair
RTE 308 over Rhinebeck Kill	Dutchess	3 — Serious	2,787	Poor
Hearst Street over Saw Mill River	Westchester	3 — Serious	2,690	Poor
CR 268 over Black Creek	Monroe	3 — Serious	2,675	Fair
County Road 10a over Canasawacta Creek	Chenango	3 — Serious	2,552	Fair
Falconer Street over Moon Brook	Chautauqua	3 — Serious	2,508	Poor
Parsonage Street over Landsman Kill	Dutchess	3 — Serious	2,508	Poor
Stringham Road over Sprout Creek	Dutchess	3 — Serious	2,457	Fair
Johnson Road over Rice Creek	Oswego	3 — Serious	2,457	Fair
County Road 10b over Owasco Lake Outlet	Cayuga	3 — Serious	2,445	Fair
Madison ST And Hom over Otter Creek	Cortland	3 — Serious	2,440	Fair
Oaklawn Avenue over Jockey Creek	Suffolk	3 — Serious	2,387	Good
Locust Avenue over Blind Brook	Westchester	3 — Serious	2,378	Poor
Mc Veigh Road over Monhagen Brook	Orange	3 — Serious	2,377	Fair
County Road 119 over Kendig Creek	Seneca	3 — Serious	2,354	Fair
Warwick BLVD over Island Park Canal	Nassau	3 — Serious	2,352	Fair
Carlton Road over Cooley Kill	Saratoga	3 — Serious	2,328	Fair
RTE 6 over Trb Indigot Creek	Orange	3 — Serious	2,323	Fair
Malden Turnpike over Sawyer Kill	Ulster	3 — Serious	2,282	Fair
First Street over Poesten Kill	Rensselaer	3 — Serious	2,267	Poor
Main Street over Aspatuck River	Suffolk	3 — Serious	2,266	Fair
Broad Street Exten over Norfolk Southern R.r. C	Tioga	3 — Serious	2,265	Fair
Mansion Street over Fall Kill Creek	Dutchess	3 — Serious	2,219	Fair
Grand AVE over Long Creek	Suffolk	3 — Serious	2,202	Fair
Aurelius Avenue over Owasco Outlet	Cayuga	3 — Serious	2,195	Fair
Queens Highway over Falls Mill Brook	Ulster	3 — Serious	2,192	Fair
Osborn Road over Beaver Swamp Brk	Westchester	3 — Serious	2,190	Fair
Peru-jordan Road over Skaneateles Creek	Onondaga	3 — Serious	2,166	Fair
Bridge Street over Schoharie Creek	Schoharie	3 — Serious	2,122	Fair
Mayer Drive over Mahwah River	Rockland	3 — Serious	2,119	Fair
Peekskill Hollow R over Peekskill Hollow Creek	Putnam	3 — Serious	2,068	Poor
Mill Dam Road over Centerport Harbor	Suffolk	3 — Serious	2,035	Fair
RTE 18 over Schwind Creek	Monroe	3 — Serious	1,989	Fair
New Suffolk AVE over Mud Creek	Suffolk	3 — Serious	1,981	Fair
County Road 21 over Fishkill Creek	Dutchess	3 — Serious	1,951	Fair
County Road 7 over Whaley Lake Stream	Dutchess	3 — Serious	1,919	Fair
RTE 9n over W Br Bouquet Rvr	Essex	3 — Serious	1,904	Fair
Weeks Street over Tuthills Creek	Suffolk	3 — Serious	1,880	Fair
Thompson Street over Bronx River	Westchester	3 — Serious	1,858	Fair
Hamilton Road over Skaneateles Creek	Onondaga	3 — Serious	1,852	Fair
South Park Drive over Starch Factory Ck	Oneida	3 — Serious	1,830	Poor
North Road over Butterfly Creek	Oswego	3 — Serious	1,828	Fair
Gayville Road over Scriba Creek	Oswego	3 — Serious	1,820	Poor
Garden Street over Fall Kill Creek	Dutchess	3 — Serious	1,811	Poor
Limekiln Road over Catlin Creek	Orange	3 — Serious	1,811	Fair
RTE 28 over E Br Delaware Rvr	Delaware	3 — Serious	1,804	Fair
Bleeker ST Ext over Ferguson Creek Ferguson	Herkimer	3 — Serious	1,786	Fair
New Suffolk AVE over West Creek	Suffolk	3 — Serious	1,780	Fair
Willardshire Road over Cazenovia Creek	Erie	3 — Serious	1,736	Fair
West Main Street over Pawling Creek	Dutchess	3 — Serious	1,730	Poor
Bridge Lane over Sagaponack Pond	Suffolk	3 — Serious	1,730	Fair
Winthrop RD over Gardiners Creek	Suffolk	3 — Serious	1,703	Fair
Station Plaza over Mamaroneck River	Westchester	3 — Serious	1,675	Fair
Porterville Road over Buffalo Creek	Erie	3 — Serious	1,586	Fair
RTE 66 over Black Brook	Rensselaer	3 — Serious	1,505	Fair
Munger Hill Road over Black Creek	Oswego	3 — Serious	1,504	Poor
E Mountain RD S over Clove Creek	Putnam	3 — Serious	1,494	Fair
Sumner Road over Crooked Creek	Genesee	3 — Serious	1,491	Fair
County Road 7 over Whaley Lake Stream	Dutchess	3 — Serious	1,486	Poor
County Road 103 over Saw Kill	Dutchess	3 — Serious	1,472	Fair
Snyder Road over Plattekill Creek	Ulster	3 — Serious	1,461	Poor
Ide Road over Eighteen Mile Crk	Niagara	3 — Serious	1,460	Fair
Red Mills Road over Dwaar Kill	Ulster	3 — Serious	1,458	Poor
Fair Street over E Br Delaware River	Delaware	3 — Serious	1,452	Fair
Chambers RD over Madison Creek	Chemung	3 — Serious	1,439	Fair
RTE 19 over Pearl Creek	Wyoming	3 — Serious	1,436	Poor
RTE 23 over Canasawacta Creek	Chenango	3 — Serious	1,409	Fair
RTE 28a over Esopus Creek	Ulster	3 — Serious	1,393	Poor
Hawkinsville Road over Black River	Oneida	3 — Serious	1,374	Good
County Road 26 over Fly Creek	Otsego	3 — Serious	1,332	Fair
County Road 66 over Mill Creek	Chautauqua	3 — Serious	1,321	Fair
Peacock Hill Road over Angelica Creek	Allegany	3 — Serious	1,320	Fair
RTE 51 over Dunderberg Creek	Otsego	3 — Serious	1,317	Fair
Gas Avenue over Elmore Mill Race	Otsego	3 — Serious	1,312	Fair
Hulsetown Road over Cromline Creek	Orange	3 — Serious	1,301	Fair
County Road 85 over Mine Creek	Steuben	3 — Serious	1,291	Fair
RTE 9n over Styles Brook	Essex	3 — Serious	1,290	Poor
Red Bridge RD over Orchard Neck Crk	Suffolk	3 — Serious	1,280	Fair
RTE 8 over Sacandaga River	Hamilton	3 — Serious	1,270	Fair
Mile Square RD over Irondequoit Creek	Monroe	3 — Serious	1,269	Fair
County Road 22 over Little Sandy Creek	Oswego	3 — Serious	1,247	Poor
RTE 18 over Beardsley Creek	Orleans	3 — Serious	1,244	Fair
RTE 18 over Proctor Brook	Orleans	3 — Serious	1,244	Fair
Field Settlement R over Mill Creek	Jefferson	3 — Serious	1,232	Fair
Parkview Drive over Murder Creek Pedestrian	Erie	3 — Serious	1,221	Fair
Four Rod Road over Cayuga Creek	Erie	3 — Serious	1,212	Poor
RTE 245 over Flint Creek	Ontario	3 — Serious	1,195	Poor
County Road 60 over Baldwin Creek	Chemung	3 — Serious	1,187	Fair
Boiceville Road over Sixmile Creek	Tompkins	3 — Serious	1,175	Fair
Marbletown Road over Canandaigua Outlt	Ontario	3 — Serious	1,174	Fair
Leydecker Road over Cazenovia Creek	Erie	3 — Serious	1,161	Poor
North Street RD over Deer Creek	Oswego	3 — Serious	1,158	Poor
County Road 30 over Black Creek	Washington	3 — Serious	1,148	Fair
Heath Road over Sturdevant Creek	Saratoga	3 — Serious	1,138	Fair
Adirondack Road over Mill Brook	Warren	3 — Serious	1,133	Fair
County Road 22 over Indigot Creek Tributary	Orange	3 — Serious	1,101	Fair
County Road 03 over Wyncoop Creek	Chemung	3 — Serious	1,092	Fair
Columbia Hill RD over Ives Cors.creek	Rensselaer	3 — Serious	1,091	Poor
County Road No 16 over Hawley Brook	Chenango	3 — Serious	1,090	Fair
County Road 40 over Beaver Kill	Ulster	3 — Serious	1,081	Poor
County Road 10a over Gilmore Creek	Chenango	3 — Serious	1,068	Good
RTE 987e over Stony Brook	Rockland	3 — Serious	1,068	Fair
County Road 119 over Canisteo River	Steuben	3 — Serious	1,064	Poor
Lake Road over Murder Creek	Genesee	3 — Serious	1,022	Fair
Town Hall Road over Sucker Brook	Cayuga	3 — Serious	1,021	Fair
County Road 43 over Black Brook	Sullivan	3 — Serious	1,009	Fair
RTE 19 over East Koy Creek	Wyoming	3 — Serious	1,003	Poor
Mckinstry Road over Elton Creek	Cattaraugus	3 — Serious	995	Fair
County Road 12 over Elm Valley Creek	Allegany	3 — Serious	985	Fair