FHWA NBI 2024 Inspection record Public-domain dataset

BOYERS MILL ROAD

Carrying BOYERS MILL ROAD over LAKE LINGANORE

1.8 MI S OF GAS HOUSE PK, Frederick, Maryland

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
35 t Inventory load rating

Bridge Snapshot: BOYERS MILL ROAD

The BOYERS MILL ROAD bridge in Frederick, Maryland carries BOYERS MILL ROAD over LAKE LINGANORE. It was built in 2017, making it 9 years old today. The structure is built primarily of prestressed concrete continuous and spans 2 sections, stretching 93.7 meters (307 feet) end to end. Daily traffic averages 5,776 vehicles, placing it in the moderately-trafficked tier of Maryland bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 34.7 metric tons.

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

How BOYERS MILL ROAD compares

▼ 16.4
Load rating vs Maryland average (51.1 t)
Bottom 29%
Lower load rating than 71% of Maryland bridges
491
Bridges in Frederick · 13 in Poor condition
BOYERS MILL ROAD 34.7 t
Maryland average 51.1 t

Live comparison across Maryland.

Historical Sufficiency Rating

PlainBridge-computed
94.9 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
28.0
Essentiality /15
11.9
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 How the historical reference is calculated.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
7/9
Good (7–9)
Superstructure
7/9
Good (7–9)
Substructure
7/9
Good (7–9)
Inventory Load Rating
34.7 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2017
Material
Prestressed Concrete Continuous
Number of Spans
2
Structure Length
93.7 m (307 ft)
Deck Width
12.5 m (41 ft)
Owner
County Highway Agency
Avg Daily Traffic
5,776 vehicles/day
Structure Number
200000F-1301010

Condition Analysis

  • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
  • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
  • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.

How to read this record

This page shows what the last federal inspection recorded, not whether BOYERS 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 BOYERS MILL ROAD against other structures in Frederick 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 BOYERS MILL ROAD?

BOYERS MILL ROAD in Frederick, Maryland has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is BOYERS MILL ROAD inspected?

BOYERS 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 5,776 vehicles per day.

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

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

What is the inventory load rating for BOYERS MILL ROAD?

BOYERS MILL ROAD has an NBI inventory load rating of 34.7 metric tons.

Who is responsible for maintaining BOYERS MILL ROAD?

BOYERS MILL ROAD is owned and maintained by County Highway Agency.

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

BOYERS MILL ROAD was built in 2017, making it 9 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.