Total Bridges
5,527
Public highway bridges in Maryland
State profile · Below national median SD
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Maryland — drawn straight from the FHWA National Bridge Inventory.
Total Bridges
5,527
Public highway bridges in Maryland
Good Condition
25.9%
1,432 bridges rated 7-9
-24.1pp vs 50% benchmark
Poor Condition
4.3%
236 bridges rated 0-4
Structurally Deficient
4.3%
236 bridges flagged for repair priority
-2.7pp vs national avg 7.0%
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Maryland on the same metric.
09
47
24
08
41
Six lowest-condition bridges in Maryland, ranked by composite NBI rating. Each is inspected at least every 24 months.
Over: BEAR CREEK
0.01 MI N OF WALNUT ST, Garrett, MD
Over: HAWLINGS RIVER
2.8 MILES NORTH OF MD 108, Montgomery, MD
Over: BEAVER CREEK
0.1 MI W OF ALT US RTE 40, Washington, MD
Over: WATERSPOUT RUN
2.63 MI. WEST MD 25, Baltimore, MD
Over: CSX RAILROAD
0.1 MI NW OF US RTE 40, Baltimore, MD
Over: LITTLE PATUXENT RIVER
0.5 MI W OF US RTE 29, Howard, MD
Over: BIG PIPE CREEK
3.35 MILE NORTH OF MD 496, Carroll, MD
Over: SNOWDEN RUN
1.89 MI W OF MINERAL HILL, Carroll, MD
Over: FISHING CREEK
0.07 MI N OF POWELL RD, Frederick, MD
Over: BROAD CREEK
0.3 MILES N OF MD 543, Harford, MD
Over: LITTLE GUNPOWDER FALLS
1.8 MI NE OF FORK ROAD, Baltimore, MD
Over: BLACKROCK RUN
0.1 MI E OF FALLS RD, Baltimore, MD
Over: LITTLE FALLS
0.8 MI W OF YORK ROAD, Baltimore, MD
Over: NORTH BRANCH OF PATAPSCO
AT BALT-CARROLL CO LINE, Baltimore, MD
Over: TRIBUTARY TO GWYNNS FALL
0.75 MI NE OF LIBERTY RD, Baltimore, MD
Over: TRIBUTARY TO GWYNNS FALL
0.1 MI S OF LYNN HAVEN DR, Baltimore, MD
Over: CSXT RR
Milepost M7.65, Baltimore city, MD
Over: GRAVELLY BRANCH
1.8 MI N OF MD RTE 314, Caroline, MD
Over: NORTH FORK LINGANORE CRK
0.6 MI N OF EMERS BURR RD, Frederick, MD
Over: LITTLE YOUGHIOGHENY RIVE
0.12 MILE WEST OF MD 560, Garrett, MD
Over: ROCK CREEK
RT 28 SOUTH OF ROCKVILLE, Montgomery, MD
Over: CATTAIL BRANCH
0.35 MI S OF MD 202, Prince George's, MD
Over: BALD HILL BRANCH
0.12 MI W OF MAIN STREET, Prince George's, MD
Over: TRIB TO NORTHWEST BRANCH
0.05 MI S OF ARUNDEL ROAD, Prince George's, MD
Over: BW PARKWAY
0.3 MILES NORTH OF MD ROU, Prince George's, MD
Over: ISRAEL CREEK
0.08 MI W OF MD RTE 67, Washington, MD
Over: LITTLE ANTIETAM CREEK
0.4 MI W OF MD RTE 67, Washington, MD
Over: EAST BRANCH WICOMICO RIV
0.18 MILE S OF US 50BU, Wicomico, MD
Over: CARROLL BRANCH
0.5 MI S OF SPARKS RD, Baltimore, MD
Over: PRETTYBOY RESERVOIR
0.7 MI E BECKLEYS RD, Baltimore, MD
Over: PATUXENT RIVER
ON CHARLES CO LINE, Calvert, MD
Over: PINEY CREEK
0.70 MI N OF KEYSVILLE RD, Carroll, MD
Over: GILLIS FALLS
0.04 MI N OF FLAG MARSH, Carroll, MD
Over: SOUTH BRANCH PATAPSCO RI
ON HOWARD COUNTY LINE, Carroll, MD
Over: BOHEMIA RIVER
2.3 MILES SOUTH OF MD 310, Cecil, MD
Over: ANTIETAM CREEK
1.2 MILES EAST OF MD 65, Washington, MD
Over: C&O CANAL
0.3 MILES FROM POTOMAC RI, Frederick, MD
Over: PEDESTRIAN TUNNEL
BWI HOURLY GARAGE TO TERM, Anne Arundel, MD
Over: NORTH BRANCH
1.81 MI N OF MD 130, Baltimore, MD
Over: PATAPSCO RIVER
0.1 MI S JOHNNYCAKE ROAD, Baltimore, MD
Over: NO. 9 TROLLEY TRAIL
0.2 MI N FREDERICK RD, Baltimore, MD
Over: BROADWAY BRANCH
1.47 MILE NORTH OF MD 287, Caroline, MD
Over: SAMS CREEK
ON FREDERICK CO LINE, Carroll, MD
Over: BIG PIPE CREEK
0.91 MILE SOUTH OF MD 832, Carroll, MD
Over: LONG BRANCH
0.504 M W OF CAR. CO LINE, Frederick, MD
Over: CATOCTIN CREEK
1.52 MILES N OF MD 180, Frederick, MD
Over: FISHING CREEK
0.12 MI W OLD FREDERICK R, Frederick, MD
Over: BEAR CREEK
0.01 MI S ACC FRNDVLLE RD, Garrett, MD
Over: DEER CREEK
2.64 MILES SOUTH OF US 1, Harford, MD
Over: MATAPONI CREEK
0.08 MI S OF MATTAPONI RD, Prince George's, MD
Over: SUITLAND PARKWAY
1.8 MILES FROM SUITLAND R, Prince George's, MD
Over: EAST CREEK
0.5 MI W OF TULLS CORNER, Somerset, MD
Over: LICKING CREEK
0.26 MILE EAST OF IS 70, Washington, MD
Over: SINEPUXENT BAY
0.17 MILE WEST OF MD 528, Worcester, MD
Over: STONEY CREEK
0.16 MILE SOUTH OF MD 642, Anne Arundel, MD
Over: SPA CREEK
ANNAPOLIS MD., Anne Arundel, MD
Showing 1,301-1,350 of 5,527 bridges
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |