FHWA NBI 2024 Inspection record Public-domain dataset

WINDSOR MILL ROAD

Carrying WINDSOR MILL ROAD over GWYNNS FALLS

0.3 MI WEST CLIFTON AVE, Baltimore city, Maryland

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
62 t Inventory load rating

Bridge Snapshot: WINDSOR MILL ROAD

The WINDSOR MILL ROAD bridge in Baltimore city, Maryland carries WINDSOR MILL ROAD over GWYNNS FALLS. It was built in 1887, making it 139 years old today. The structure is built primarily of concrete and spans 1 section, stretching 24.4 meters (80 feet) end to end. Daily traffic averages 20,504 vehicles, placing it in the heavily-trafficked tier of Maryland bridges. It is owned and maintained by City/Municipal Highway Agency.

The latest FHWA inspection records show superstructure at 6/9, substructure at 5/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 61.7 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How WINDSOR MILL ROAD compares

▲ 10.6
Load rating vs Maryland average (51.1 t)
Top 26%
Higher load rating than 74% of Maryland bridges
380
Bridges in Baltimore city · 27 in Poor condition
WINDSOR MILL ROAD 61.7 t
Maryland average 51.1 t

Live comparison across Maryland.

Historical Sufficiency Rating

PlainBridge-computed
64.0 / 100 - historical 50–79.9 band
Structural adequacy /55
45.0
Serviceability /30
10.0
Essentiality /15
12.0
Special reductions
−3.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Superstructure
6/9
Fair (5–6)
Substructure
5/9
Fair (5–6)
Inventory Load Rating
61.7 t
NBI inventory level (metric tons)
Overall Condition
Fair

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1887
Material
Concrete
Number of Spans
1
Structure Length
24.4 m (80 ft)
Deck Width
16.5 m (54 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
20,504 vehicles/day
Structure Number
200000BC2211010

Condition Analysis

  • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
  • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.

How to read this record

This page shows what the last federal inspection recorded, not whether WINDSOR MILL ROAD is safe to cross today. Here is how to use it.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
  • Compare WINDSOR MILL ROAD against other structures in Baltimore city and across Maryland. Maryland bridges
  • Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge

Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.

Frequently Asked Questions

What do the condition ratings mean for WINDSOR MILL ROAD?

WINDSOR MILL ROAD in Baltimore city, Maryland, superstructure rating of 6/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.

How often is WINDSOR MILL ROAD inspected?

WINDSOR MILL ROAD's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 20,504 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. WINDSOR MILL ROAD is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for WINDSOR MILL ROAD?

WINDSOR MILL ROAD has an NBI inventory load rating of 61.7 metric tons.

Who is responsible for maintaining WINDSOR MILL ROAD?

WINDSOR MILL ROAD is owned and maintained by City/Municipal Highway Agency.

How old is WINDSOR MILL ROAD and does age affect safety?

WINDSOR MILL ROAD was built in 1887, making it 139 years old.

Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.