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: US 50
0.43 MILE SOUTH OF MD 818, Worcester, MD
Over: GEORGES RUN
0.55 MI SW OF MD 25, Baltimore, MD
Over: STEMMERS RUN
0.2 MI SW OF ROSSVILLE RD, Baltimore, MD
Over: WESTERN RUN
0.1 MI S CROSS COUNTRY BL, Baltimore city, MD
Over: JONES FALLS
NB I-83 TO WB N PKWY, Baltimore city, MD
Over: MONOCACY RIVER
ON FRED CO LINE, Carroll, MD
Over: MIDDLE BRANCH
0.6 MI E RUSSELL ST, Baltimore city, MD
Over: PROPOSED CANTON RR TRACK
Milepost M56.2, Baltimore city, MD
Over: MD 948AO FLINTSTONE CRK
0.24 M E OF BR NO 0116200, Allegany, MD
Over: SHAWAN ROAD WBR
0.91 MI N OF BEAVERDAM RD, Baltimore, MD
Over: SHAWAN ROAD WBR
0.91 MI N OF BEAVERDAM RD, Baltimore, MD
Over: IS 70 RAMP A
0.28 MILE EAST OF MD 180, Frederick, MD
Over: BR OF INDIAN CREEK
0.32 MILE NORTH OF MD 201, Prince George's, MD
Over: BR OF INDIAN CREEK
0.32 MILE NORTH OF MD 201, Prince George's, MD
Over: MD 589
1.58 MILES EAST OF MD 575, Worcester, MD
Over: CABIN BRANCH
0.5 MI E OF MD RTE 4, Anne Arundel, MD
Over: CHARLES RUN
500 FT S SHEPPERD ROAD, Baltimore, MD
Over: LONG QUARTER BRANCH
0.62 MI N OF MD 146, Baltimore, MD
Over: PARKER BRANCH
1.4 M SE OF OLD YORK RD, Baltimore, MD
Over: TRIBUTARY TO LITTLE GUNP
0.3 MI N FRANKLINVILLE RD, Baltimore, MD
Over: UNDERGROUND CONDUIT
0.2 MI N MADISON ST, Baltimore city, MD
Over: MTA LIGHT RAIL
ON RAMP SB I-83, Baltimore city, MD
Over: PINEY CREEK
0.08 MI N OF MD 194, Carroll, MD
Over: MIDDLE RUN
0.60 MI S OF DEER PARK RD, Carroll, MD
Over: BROAD CREEK
0.03 MILES E OF MD 646, Harford, MD
Over: METRO ACCESS ROAD
.7 MI S OF SHADY GROVE RD, Montgomery, MD
Over: DESOTO RD
MILEPOST M52.4, Baltimore city, MD
Over: LIGHT RAIL
0.3 MI E RUSSELL ST, Baltimore city, MD
Over: NORFOLK SOUTHERN RR
.08 MILE SOUTH OF MD 695B, Baltimore, MD
Over: US 1
0.58 MI N OF AA CO LINE, Baltimore, MD
Over: RICHARDSON RD
2.69 MILE NORTH OF MD 832, Carroll, MD
Over: RED RUM RUN
0.19 M W OF MARKET STREET, Cecil, MD
Over: HIGH RUN
0.41 MILE NORTH OF US 15G, Frederick, MD
Over: MAUGANS AVE
1.89 MILES NORTH OF MD 58, Washington, MD
Over: CSX TRANS.
0.53 MILE WEST OF IS 81, Washington, MD
Over: CSX TRANS.
0.53 MILE WEST OF IS 81, Washington, MD
Over: SOUTH RIVER
2 MI SOUTH OF MD 665, Anne Arundel, MD
Over: AMTRAK RAILROAD
0.1 MI NW EASTERN AVE EXT, Baltimore, MD
Over: TRIBUTARY TO HERRING RUN
0.4 MI S NORTHERN PKWY, Baltimore city, MD
Over: WESTERN RUN
0.2 MI E YORK RD, Baltimore city, MD
Over: ALLOWAY CREEK
0.11 MI N OF STARNERS DAM, Carroll, MD
Over: PINEY CREEK
0.54 MI WEST OF MD 194, Carroll, MD
Over: PINEY RUN
0.80 MI N RAINCLIFFE ROAD, Carroll, MD
Over: GRAVE RUN
ROHRBAUGH RD 0.36, Carroll, MD
Over: MIDDLE CREEK
0.1 MI NE OF MD 17, Frederick, MD
Over: REDDY BRANCH
0.9 MI E OF JCT SR 97, Montgomery, MD
Over: RUSSELL STREET
Milepost M3.6, Baltimore city, MD
Over: BRANCH OF NORTH BRANCH
0.09 MI S OF PA LINE, Allegany, MD
Over: PATAPSCO RIVER
ON BALTIMORE COUNTY LINE, Anne Arundel, MD
Over: US 40
0.39 MILE EAST OF MD 7, Baltimore, MD
Showing 2,551-2,600 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.