FHWA NBI 2024 Inspection record Public-domain dataset

PARKING LOT ROAD

Carrying PARKING LOT ROAD over BLUE BLAZES CREEK

US-15N, WEST ON MC-77 TO, Frederick, Maryland

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
51 t Inventory load rating

Bridge Snapshot: PARKING LOT ROAD

The PARKING LOT ROAD bridge in Frederick, Maryland carries PARKING LOT ROAD over BLUE BLAZES CREEK. It was built in 2019, making it 7 years old today. The structure is built primarily of prestressed concrete continuous and spans 1 section, stretching 10.4 meters (34 feet) end to end. Daily traffic averages 20 vehicles, placing it in the lower-traffic tier of Maryland bridges. It is owned and maintained by National Park Service.

The latest FHWA inspection records show a deck rating of 7/9, superstructure at 8/9, substructure at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 50.8 metric tons.

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

How PARKING LOT ROAD compares

▼ 0.3
Load rating vs Maryland average (51.1 t)
Top 39%
Higher load rating than 61% of Maryland bridges
491
Bridges in Frederick · 13 in Poor condition
PARKING LOT ROAD 50.8 t
Maryland average 51.1 t

Live comparison across Maryland.

Historical Sufficiency Rating

PlainBridge-computed
88.5 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
18.5
Essentiality /15
15.0
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 How the historical reference is calculated.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
8/9
Good (7–9)
Substructure
7/9
Good (7–9)
Inventory Load Rating
50.8 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2019
Material
Prestressed Concrete Continuous
Number of Spans
1
Structure Length
10.4 m (34 ft)
Deck Width
7.4 m (24 ft)
Owner
National Park Service
Avg Daily Traffic
20 vehicles/day
Structure Number
3220002P0000000

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) is in good condition (8/9), showing no significant deterioration.
  • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.

How to read this record

This page shows what the last federal inspection recorded, not whether PARKING LOT 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 PARKING LOT 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 PARKING LOT ROAD?

PARKING LOT ROAD in Frederick, Maryland has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is PARKING LOT ROAD inspected?

PARKING LOT 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 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. PARKING LOT 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 PARKING LOT ROAD?

PARKING LOT ROAD has an NBI inventory load rating of 50.8 metric tons.

Who is responsible for maintaining PARKING LOT ROAD?

PARKING LOT ROAD is owned and maintained by National Park Service.

How old is PARKING LOT ROAD and does age affect safety?

PARKING LOT ROAD was built in 2019, making it 7 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.