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: TRIB TO HENSON CREEK
0.01 MI N OF FERGUSON LA, Prince George's, MD
Over: CLASH CREEK
0.42 MI W OF MD 210, Prince George's, MD
Over: TRIB OF UPPER THOROFARE
AT HARRISON POINT ROAD, Somerset, MD
Over: TOWN RUN
0.3 MILE NORTH OF MD 5, St. Mary's, MD
Over: TRED AVON RIVER
0.12 MILE SOUTH OF MD 322, Talbot, MD
Over: LITTLE ANTIETAM CREEK
0.626 MILE SOUTH OF MD 60, Washington, MD
Over: GROVE CREEK
0.2 MI N OLD FORGE RD, Washington, MD
Over: AMTRAK
0.71 MILE SOUTH OF MD 170, Anne Arundel, MD
Over: DEEP RUN
HOWARD COUNTY LINE, Anne Arundel, MD
Over: CSX TRANSPORTATION
0.08 MILE WEST OF US 40, Baltimore, MD
Over: LONG QUARTER BRANCH
0.08 MI W OF MD 146, Baltimore, MD
Over: CSX TRANSPORTATION
0.151 MILE WEST OF MD 20, Carroll, MD
Over: MORGAN RUN
3.63 MILE SOUTH OF MD 32, Carroll, MD
Over: NORTH BRANCH OF POTOMAC
ON WEST VIRGINIA LINE, Garrett, MD
Over: JAMES RUN
0.5 MILES E OF MD 136, Harford, MD
Over: LITTLE PATUXENT RIVER
0.38 MILE SOUTH OF MD 32, Howard, MD
Over: LITTLE SENECA CREEK
1.44 MILES NORTH OF MD 27, Montgomery, MD
Over: ROCK RUN
1 MI SOUTH OF MD 189, Montgomery, MD
Over: CSXT RAILROAD
0.08 MI E OF US 220, Allegany, MD
Over: PATAPSCO RIVER
ON HOWARD CO LINE, Baltimore, MD
Over: CSX TRANSPORTATION
0.26 MILE NORTH OF US 1, Baltimore, MD
Over: MTA LIGHT RAIL
Milepost 5.2, Baltimore, MD
Over: HERRING RUN
0.6 MI W ERDMAN AVE, Baltimore city, MD
Over: WB MCCOMAS ST
0.15 MI N OF HANOVER ST, Baltimore city, MD
Over: LYONS CREEK
ON ANNE ARUNDEL CO LINE, Calvert, MD
Over: STONE RUN
0.59 MI N OF MD 273, Cecil, MD
Over: CSX TRANSPORTATION
0.25 mi E MD RTE 925, Charles, MD
Over: CARROLL CREEK
365' NORTH OF MD 144, Frederick, MD
Over: CASSELMAN RIVER
1.08 MILE EAST OF MD 495, Garrett, MD
Over: CASSELMAN RIVER
1.08 MILE EAST OF MD 495, Garrett, MD
Over: TRIB / BIG BRANCH
0.6 MILES N OF W HEAPS RD, Harford, MD
Over: TRIB / JACKS HOLE
0.2 MILES NE OF MD 165, Harford, MD
Over: HEAVENLY WATERS
0.4 MILES SW OF MD 924, Harford, MD
Over: JAMES RUN
6.9 MI N BALT-HAR CO LINE, Harford, MD
Over: LITTLE PATUXENT RIVER
1.62 MILES S OF MD 175, Howard, MD
Over: SUCKER BRANCH
0.05 MI OF RODGERS AVE, Howard, MD
Over: ROCK CREEK
0.55 MILE EAST OF MD 186, Montgomery, MD
Over: CSXT RR & WMATA METRO
0.05 MILES EAST OF MD 355, Montgomery, MD
Over: ANTIETAM CREEK
0.8 MI W OF US RTE 40, Washington, MD
Over: ELK LICK CREEK
0.62 M E OF BR NO 0115400, Allegany, MD
Over: HOWARD STREET
0.44 MI E OF US 48H, Allegany, MD
Over: SEVERN RUN
1.2 MILE NORTH OF MD 175, Anne Arundel, MD
Over: MTA LIGHT RAIL, JONES FA
0.5 MI N OF NORTHERN PKWY, Baltimore, MD
Over: GUNPOWDER FALLS
1.7 MI. E. OF YORK ROAD, Baltimore, MD
Over: GUNPOWDER FALLS
2.3 MI S BALT-HAR CO LINE, Baltimore, MD
Over: HERRING RUN
MORAVIA RAMP TO PULASKI H, Baltimore city, MD
Over: CSX LOCUST POINT YARD
0.5 mi N OF EXIT FOR I395, Baltimore city, MD
Over: OTTERS POINT CREEK
0.1 MILE NORTH OF US 40, Harford, MD
Over: DEER CREEK
1.7 MILES S OF MD 165, Harford, MD
Over: SLIGO CREEK
0.08 MILE SOUTH OF MD 410, Prince George's, MD
Showing 2,851-2,900 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 |