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 CHESAPEAKE BAY
0.28 MI. N OF 7TH ST., Calvert, MD
Over: TRIBUTARY OF BYNUM RUN
0.1 MI. E. of Tyrell Ct, Harford, MD
Over: ROCKBURN BRANCH
AT ROCKBURN RD, Howard, MD
Over: BRADDOCK RUN
N OF MD 53, Allegany, MD
Over: CLEMSON BRANCH
0.5 MI E OF CLEMSONVILLE, Frederick, MD
Over: TUSCARORA CREEK
0.1 MI N OF OPOSSUMTWN PK, Frederick, MD
Over: FERRY BRANCH
0.2 MI S OF MD 422, Anne Arundel, MD
Over: HOLLOW CREEK
0.34 MI SOUTH OF MD 17, Frederick, MD
Over: MD200 (ICC)
0.7 mi E OF REDLAND RD, Montgomery, MD
Over: AMTRAK
0.03 MILE S OF MD 564C, Prince George's, MD
Over: MOUNT NEBO BRANCH
0.21 MI N OF MD RTE 214, Prince George's, MD
Over: SOUTH BRANCH GUNPOWDER F
150 FT N OF TRACEYS MILL, Carroll, MD
Over: DORSEY BRANCH
0.5 MI N OF SHARP RD, Howard, MD
Over: LITTLE CATOCTIN CREEK
0.2 MI N OF WOODLAND WAY, Frederick, MD
Over: MIDDLE PATUXENT RIVER
0.89 MILE NORTH OF US 29, Howard, MD
Over: MUDDY BRANCH
AT QUERY MILL ROAD, Montgomery, MD
Over: DORSEY CREEK
0.3 KM E OF DECATUR AVE, Anne Arundel, MD
Over: SILVER CREEK
0.4 MILES EAST OF MD 185, Montgomery, MD
Over: AIRPORT RETURN RAMP
BWI AIRPORT, Anne Arundel, MD
Over: BIG ELK CREEK
0.1 MILE SOUTH OF MD 7D, Cecil, MD
Over: PATUXENT RIVER
ON MONTGOMERY CO LINE, Howard, MD
Over: KING BRANCH
.1 MI S. OF CORPORATE DR, Frederick, MD
Over: WELDON CREEK
0.9 MI S OF OAK ORCHRD RD, Frederick, MD
Over: JAMES RUN
0.28 MILE NORTH OF MD 136, Harford, MD
Over: DEEP RUN
0.4 MI N MD 176 HO/AA CO., Howard, MD
Over: LITTLE GUNPOWDER FALLS
ON HARFORD CO LINE, Baltimore, MD
Over: LITTLE GUNPOWDER FALLS
ON HARFORD CO LINE, Baltimore, MD
Over: GOODWIN RUN
0.28 MILE EAST OF IS 83, Baltimore, MD
Over: GOODWIN RUN
0.28 MILE EAST OF IS 83, Baltimore, MD
Over: TRIBUTARY TO REDHOUSE CR
0.2 MI NW OF MD 7, Baltimore, MD
Over: LITTLE PIPE CREEK
0.01 MI N OF ROOPS MIL RD, Carroll, MD
Over: NORTH BRANCH PATAPSCO RI
0.5 MI. W. EMORY ROAD, Carroll, MD
Over: TRIBUTARY TO PISCATAWAY
0.2 MI E OF SUMMIT CK DR, Prince George's, MD
Over: PERSIMMON CREEK
0.4 M NE OF MD 235, St. Mary's, MD
Over: LANES RUN
1.3 MI N OF US RTE 40, Washington, MD
Over: RELOCATED RANDOLPH ROAD
2.5 MI N. OF I-495, Montgomery, MD
Over: SEVEN SPRINGS RUN
1.15 MILES E OF MD 51, Allegany, MD
Over: TRIB. TO PATUXENT RIVER
0.25 MI. SOUTH OF MD32, Anne Arundel, MD
Over: TRIBUTARY TO GUNPOWDER F
1.28 MI E OF US RTE 1, Baltimore, MD
Over: NORTHEAST CREEK
0.71 MI N OF MD 274, Cecil, MD
Over: CSX TRANSPORTATION
0.98 MILE N OF MD 117, Montgomery, MD
Over: ROCK CREEK
0.75 MI N OF JCT SR 28, Montgomery, MD
Over: ISRAEL CREEK
0.6 MI S OF DAYSVILLE RD, Frederick, MD
Over: DEEP CREEK LAKE
3.88 MILE SOUTH OF MD 42, Garrett, MD
Over: BYNUM RUN
0.4 MILES S OF MD 22, Harford, MD
Over: AMTRAK,SER RD,BEAVERDAM
0.16 MILE SOUTH OF US 50, Prince George's, MD
Over: NORTHWEST BRANCH
0.7 MILES EAST OF MD 182, Montgomery, MD
Over: COLLINGTON BRANCH
0.03 MILE NORTH OF MD 725, Prince George's, MD
Over: CABIN BRANCH
2.91 MILES S OF IS 495, Prince George's, MD
Over: MASON ROAD
0.82 MILE NORTH OF I-68, Allegany, MD
Showing 4,951-5,000 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 |