FHWA NBI 2024 Inspection record Public-domain dataset

US 220

Carrying US 220 over MILL RUN

.13 MILE NORTH OF MD 830B, Allegany, Maryland

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
38 t Inventory load rating

Bridge Snapshot: US 220

The US 220 bridge in Allegany, Maryland carries US 220 over MILL RUN. It was built in 1950, making it 76 years old today. The structure is built primarily of concrete, stretching 11.4 meters (37 feet) end to end. Daily traffic averages 7,111 vehicles, placing it in the moderately-trafficked tier of Maryland bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show culvert at 5/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 37.6 metric tons.

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

How US 220 compares

▼ 13.5
Load rating vs Maryland average (51.1 t)
Bottom 34%
Lower load rating than 66% of Maryland bridges
245
Bridges in Allegany · 15 in Poor condition
US 220 37.6 t
Maryland average 51.1 t

Live comparison across Maryland.

Historical Sufficiency Rating

PlainBridge-computed
72.7 / 100 - historical 50–79.9 band
Structural adequacy /55
45.0
Serviceability /30
29.0
Essentiality /15
0.0
Special reductions
−1.3

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 How the historical reference is calculated.

Condition Ratings

Culvert
5/9
Fair (5–6)
Inventory Load Rating
37.6 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1950
Material
Concrete
Structure Length
11.4 m (37 ft)
Owner
State Highway Agency
Avg Daily Traffic
7,111 vehicles/day
Structure Number
100000010058020

How to read this record

This page shows what the last federal inspection recorded, not whether US 220 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 US 220 against other structures in Allegany 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 US 220?

US 220 in Allegany, Maryland on the FHWA's 0–9 scale.

How often is US 220 inspected?

US 220'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 7,111 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. US 220 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 US 220?

US 220 has an NBI inventory load rating of 37.6 metric tons.

Who is responsible for maintaining US 220?

US 220 is owned and maintained by State Highway Agency.

How old is US 220 and does age affect safety?

US 220 was built in 1950, making it 76 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.