Total Bridges
5,484
Public highway bridges in Maryland
State profile · Below median Poor share
According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Maryland.
Maryland holds 5,484 public highway bridges (#34 of 52 by inventory) with a 4.56% Poor share (#38 of 52 by Poor share).
That is 4.6% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 15 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.
Inventory: FHWA NBI 2024 · last ETL August 2026
Total Bridges
5,484
Public highway bridges in Maryland
Good Condition
32.3%
1,771 bridges rated 7-9
-17.7pp vs 50% benchmark
Poor Condition
4.6%
250 bridges whose lowest applicable component is rated 0-4
-3.0pp vs national avg 7.5%
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 7.5%.
Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.
Maryland vs all states by public bridge inventory
Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges
5,484 34th of 54 higher than 20 of 54 states
States and territories, banded by public bridge inventory size
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · 2024
The highlighted point is Maryland: 5,484 bridges and 4.56% in Poor condition, rank #15 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Maryland on that same Poor-share ordering:
The full national sortable table lives on the rankings page.
Exclusive FHWA material families across all 5,484 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.
State agency holds 53.4% of the 5,484 public highway bridges filed under Maryland in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.
Pre-1950 construction accounts for 15.9% of the 5,484 bridges with a recorded original year in Maryland. Era bands are orthogonal to the Poor-share ranking above.
Adjacent states by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Maryland on the same metric.
MN
NM
MD
OR
CT
Six lowest-condition bridges in Maryland, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
Over: CSXT RAILROAD
0.2 MI W OF CUMBERLAND ST, Allegany, MD
Over: CSXT RAILROAD
0.6 MI E OF WASHINGTON ST, Allegany, MD
Over: ROCK RUN
.01 MI S. OF RACE STREET, Cecil, MD
Over: HUNTING CREEK
ON CAROLINE COUNTY LINE, Dorchester, MD
Over: CSXT RAILROAD
0.2 MI E OF MICHIGAN AVE, Montgomery, MD
Over: OLD MILL STREAM BRANCH
0.7 MILE EAST OF MD 213, Queen Anne's, MD
Over: CSX
0.4 MI S OF NORTH AVE, Baltimore city, MD
Over: I-83
0.4 MI N OF NORTH AVE, Baltimore city, MD
Over: FISHING CREEK
AT PUTNAM RD INT, Frederick, MD
Over: ROCK CREEK
0.6 MILES WEST OF MD 586, Montgomery, MD
Over: BENS RUN
0.4 MI SOUTH OF MD 26, Baltimore, MD
Over: PRINCIPO CREEK
0.62 MILE SOUTH OF US 40, Cecil, MD
Over: MD 742
0.33 MILE EAST OF MD 42, Garrett, MD
Over: BEAVER CREEK
1.95 MILES N OF MD 910B, Washington, MD
Over: I-83 MTA AND AMTRAK
0.2 MI S OF NORTH AVE, Baltimore city, MD
Over: LITTLE NORTHEAST CREEK
0.01 MI N OF WHEATLEY RD, Cecil, MD
Over: LITTLE FISHING CREEK
0.1 MI W OF GAMBRILL PARK, Frederick, MD
Over: PATUXENT RIVER ROAD
0.80 MI E OF PG CO LINE, Anne Arundel, MD
Over: RUTLAND ROAD
@ RUTLAND RD, Anne Arundel, MD
Over: LITTLE GUNPOWDER FALLS
ON HARFORD CO LINE, Baltimore, MD
Over: GWYNNS FALLS
0.12 MILE NORTH OF IS 795, Baltimore, MD
Over: FRANCIS AVENUE
0.35 MILE SOUTH OF IS 95, Baltimore, MD
Over: IS 95 SBR
2.2 MI N OF MD 216, Howard, MD
Over: IS 70
0.40 MILE N OF MD 144A, Howard, MD
Over: BUCKLODGE BRANCH
3.12 MILES NORTH OF MD 28, Montgomery, MD
Over: GREAT SENECA CREEK
1.3 MILES NORTH OF MD 28, Montgomery, MD
Over: SCOTTS LEVEL BRANCH
0.67 MI N OF MD 26, Baltimore, MD
Over: GRAVES RUN
0.6 MI N OF BECKLEYSVILLE, Baltimore, MD
Over: MD 25 FALLS RD
OFF RAMP OVER FALLS RD, Baltimore city, MD
Over: ON RAMP FROM FALLS ROAD
JFX OVER FALLS RD ON RAMP, Baltimore city, MD
Over: PATUXENT RIVER
1.2 MI W OF MD 94, Howard, MD
Over: CSXT RAILROAD
0.5 MILES EAST OF MD 355, Montgomery, MD
Over: SLIGO CREEK
0.7 MI E OF JCT SR 97, Montgomery, MD
Over: ROCK CREEK
0.15 MI N OF JCT SR 547, Montgomery, MD
Over: MD 295
1.09 MI E OF MD 170, Anne Arundel, MD
Over: IS 97 RAMPS S & W
0.31 M N OF BALTO CITY, Anne Arundel, MD
Over: STANSFIELD RD
0.50 MI N OF PG CO, Howard, MD
Over: IS 81
1.4 MILES WEST OF US 11, Washington, MD
Over: IS 81
1.4 MILES WEST OF US 11, Washington, MD
Over: TRACYS CREEK
0.11 MI SOUTH OF MD 258, Anne Arundel, MD
Over: I-83 BERM
NEAR COLDSPRING LANE, Baltimore city, MD
Over: SAINT LEONARD CREEK
0.3 MI N OF MD RTE 2/4, Calvert, MD
Over: SMALL STREAM
0.1 MI EAST OF MD RTE 85, Frederick, MD
Over: TIMONIUM ROAD
1.005 MI N OF MD 131, Baltimore, MD
Over: TIMONIUM ROAD
1.005 MI N OF MD 131, Baltimore, MD
Over: CSX TRANSPORTATION
0.3 MI W OF ALLEGANY CO, Garrett, MD
Over: TUSCARORA CREEK
0.25 MI E OPOSSUMTOWN PIK, Frederick, MD
Over: CABIN JOHN CREEK
1 MI E OF SEVEN LOCKS RD, Montgomery, MD
Over: CORSICA RIVER
0.2 MI N OF MD RTE 304, Queen Anne's, MD
Over: CSX RAILROAD
0.1 MILES SOUTH OF MD ROU, Prince George's, MD
Over: AMTRAK
0.12 MILE WEST OF MD 7C, Cecil, MD
Over: GREEN HILL CREEK
3.82 MILES WEST OF MD 349, Wicomico, MD
Over: I-83 SB
ON RAMP TO SB I-83, Baltimore city, MD
Over: WESTERN RUN
0.1 MI N OF KELLY AVE, Baltimore city, MD
Over: WINTERS RUN
1.1 MILES W OF MD 24, Harford, MD
Over: BUTLER BRANCH
0.03 MI N OF ARMOR DRIVE, Prince George's, MD
Showing 2,901-2,950 of 5,484 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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
What to do with this
Use Maryland's inventory picture to drill to a county or a specific span.
NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Maryland Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.