FHWA NBI 2024 Inspection record Public-domain dataset

CLIPPER MILL ROAD

Carrying CLIPPER MILL ROAD over PRETTYBOY RESERVOIR

0.3 MI E GUNPOWDER RD, Baltimore, Maryland

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
48 t Inventory load rating

Bridge Snapshot: CLIPPER MILL ROAD

The CLIPPER MILL ROAD bridge in Baltimore, Maryland carries CLIPPER MILL ROAD over PRETTYBOY RESERVOIR. It was built in 1931, making it 95 years old today. It was last reconstructed in 1988, extending its service life. The structure is built primarily of steel and spans 6 sections, stretching 114.6 meters (376 feet) end to end. Daily traffic averages 302 vehicles, placing it in the lower-traffic tier of Maryland bridges. It is owned and maintained by City/Municipal Highway Agency.

The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 48.1 metric tons.

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

How CLIPPER MILL ROAD compares

▼ 3.0
Load rating vs Maryland average (51.1 t)
Top 43%
Higher load rating than 57% of Maryland bridges
787
Bridges in Baltimore · 23 in Poor condition
CLIPPER MILL ROAD 48.1 t
Maryland average 51.1 t

Live comparison across Maryland.

Historical Sufficiency Rating

PlainBridge-computed
54.6 / 100 - historical 50–79.9 band
Structural adequacy /55
30.0
Serviceability /30
10.0
Essentiality /15
14.6
Special reductions
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 How the historical reference is calculated.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

Deck
5/9
Fair (5–6)
Superstructure
5/9
Fair (5–6)
Substructure
4/9
Poor (1–4)
Inventory Load Rating
48.1 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1931
Last Reconstructed
1988
Material
Steel
Number of Spans
6
Structure Length
114.6 m (376 ft)
Deck Width
7.0 m (23 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
302 vehicles/day
Structure Number
200000BC6519010

Condition Analysis

  • The deck (driving surface) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
  • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
  • The substructure (piers and abutments) rates poor at 4/9, advanced deterioration that should be prioritized for repair.

How to read this record

CLIPPER MILL ROAD is in the federal Poor condition category. That is a component-based result, not a closure order.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
  • Compare CLIPPER MILL ROAD against other structures in Baltimore 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 CLIPPER MILL ROAD?

CLIPPER MILL ROAD in Baltimore, Maryland has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.

How often is CLIPPER MILL ROAD inspected?

CLIPPER 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 302 vehicles per day.

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

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

What is the inventory load rating for CLIPPER MILL ROAD?

CLIPPER MILL ROAD has an NBI inventory load rating of 48.1 metric tons.

Who is responsible for maintaining CLIPPER MILL ROAD?

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

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

CLIPPER MILL ROAD was built in 1931, making it 95 years old and last reconstructed in 1988.

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.