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: BRANCH OF BEAVERDAM RUN
0.71 MI N OF CHURCH LANE, Baltimore, MD
Over: BR OF HILL TOP FORK
1.99 MILES SOUTH OF MD 6, Charles, MD
Over: MONOCACY RIVER
0.2 MILE WEST OF MD 194, Frederick, MD
Over: N. BRANCH OF CASSELMAN R
0.67 MI NW OF MD RTE 495, Garrett, MD
Over: BREAD AND CHEESE BRANCH
1.1 MILES NORTH OF MD 152, Harford, MD
Over: DEEP RUN
0.5 MI SE OF US 1, Howard, MD
Over: COVENTRY ROAD
1.66 MILES S OF MD 337, Prince George's, MD
Over: NORTHWOOD DRIVE
0.516 MILE WEST OF US 13, Wicomico, MD
Over: YOUGHIOGHENY RIVER
0.36 MILE EAST OF MD 39A, Garrett, MD
Over: ELM ROAD
BWI AIRPORT RAMP A, Anne Arundel, MD
Over: TRIBUTARY TO LITTLE GUNP
0.37 MI NE OF MD RTE 145, Baltimore, MD
Over: MIDDLE CREEK
0.6 MI S OF BIDLE ROAD, Frederick, MD
Over: SNOWDEN RIVER PARKWAY
0.84 MILE WEST OF MD 108, Howard, MD
Over: LITTLE PATUXENT RIVER
0.23 MILE NORTH OF IS 70, Howard, MD
Over: SENECA CREEK
0.2 MILE EAST OF MD 107, Montgomery, MD
Over: POCOMOKE RIVER
ON SOMERSET CO LINE, Worcester, MD
Over: PICTURE SPRING BRANCH
0.3 MI SOUTH OF MD 32, Anne Arundel, MD
Over: GWYNNS FALLS
0.3 M NW PAINTERS MILL RD, Baltimore, MD
Over: CAMPBELL ROAD
0.66 MI S OF MD RTE 43, Baltimore, MD
Over: AMTRAK
0.2 MI N OF MT ROYAL AVE, Baltimore city, MD
Over: WATTS CREEK
0.5 MI SE OF DENTON, Caroline, MD
Over: MEADOW BRANCH
1.24 MILE SOUTH OF MD 832, Carroll, MD
Over: BIG PIPE CREEK
0.15 MI SW OF EBBVALE RD, Carroll, MD
Over: CATTAIL BRANCH
0.74 MI N OF CARROLL CO, Frederick, MD
Over: JAMES RUN
1.6 MILES NORTH OF MD 543, Harford, MD
Over: LITTLE BENNETT CREEK
1.9 MI N OF MD 355, Montgomery, MD
Over: Ramp NW
0.6 mi W of Briggs Chaney, Montgomery, MD
Over: BEAVERDAM DITCH
0.43 MILE WEST OF MD 313, Queen Anne's, MD
Over: WMSRR
0.09 M S OF N MECHANIC ST, Allegany, MD
Over: RIVA ROAD
0.63 MILE WEST OF MD 2, Anne Arundel, MD
Over: PINEY BRANCH
0.76 MI SE OF MD RTE 228, Charles, MD
Over: TUSCARORA CREEK
1/4 MI. N. OF MONOCACY BL, Frederick, MD
Over: JAMES RUN
0.21 MI E OF MD 136, Harford, MD
Over: MIDDLE PATUXENT RIVER
1.2 MI S OF MD RTE 144, Howard, MD
Over: AMTRAK, STONY RUN
0.14 MI S OF IS 195, Anne Arundel, MD
Over: TRIBUTARY TO PINEY RUN
0.5 MI. W. OF RIDGE RD., Anne Arundel, MD
Over: LITTLE GUNPOWDER FALLS
ON HARFORD CO LINE, Baltimore, MD
Over: DEEP CREEK
0.68 MILE EAST OF MD 150, Baltimore, MD
Over: DESOTO RD
Milepost M52.7, Baltimore city, MD
Over: SHILOH ROAD
2.276 M S OF MD 482, Carroll, MD
Over: TUSCARORA CREEK
0.19 MI NE OF ADAMSTOWN R, Frederick, MD
Over: CARROLL CREEK
595' SOUTH OF MD 144, Frederick, MD
Over: CARROLL CREEK
0.1 MI S OF E CHURCH ST, Frederick, MD
Over: CATTAIL CREEK
0.5 MI N UNION CHAPEL RD, Howard, MD
Over: BROAD RUN TRIBUTARY
2 MI W OF JCT SR 109, Montgomery, MD
Over: PAINT BRANCH
GSA at White Oak, MD. I-, Montgomery, MD
Over: TRIBUTARY TO MAGOTHY RIV
0.56 Mi SOUTH OF JCT RT 2, Anne Arundel, MD
Over: NCR TRAIL & LITTLE FALLS
0.55 MILE SOUTH OF MD 45, Baltimore, MD
Over: BROAD RUN
0.35 MI E OF US ROUTE 1, Baltimore, MD
Over: TUSCARORA CREEK
1/4 MI. N. OF MONOCACY BL, Frederick, MD
Showing 4,701-4,750 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 |