FHWA NBI 2024 Inspection record Public-domain dataset

HWY HIRAM BLAIR

Carrying HWY HIRAM BLAIR over WATER POND BROOK

.5 MILE SOUTH OF RTE 23, Hampden, Massachusetts

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
29 t Inventory load rating

Bridge Snapshot: HWY HIRAM BLAIR

The HWY HIRAM BLAIR bridge in Hampden, Massachusetts carries HWY HIRAM BLAIR over WATER POND BROOK. It was built in 2012, making it 14 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 10.4 meters (34 feet) end to end. Daily traffic averages 129 vehicles, placing it in the lower-traffic tier of Massachusetts bridges. It is owned and maintained by Town/Township Highway Agency.

The latest FHWA inspection records show culvert at 8/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 29.2 metric tons.

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

How HWY HIRAM BLAIR compares

▼ 12.0
Load rating vs Massachusetts average (41.2 t)
Bottom 20%
Lower load rating than 80% of Massachusetts bridges
429
Bridges in Hampden · 30 in Poor condition
HWY HIRAM BLAIR 29.2 t
Massachusetts average 41.2 t

Live comparison across Massachusetts.

Historical Sufficiency Rating

PlainBridge-computed
69.5 / 100 - historical 50–79.9 band
Structural adequacy /55
53.1
Serviceability /30
10.0
Essentiality /15
13.4
Special reductions
−7.0

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 How the historical reference is calculated.

Condition Ratings

Culvert
8/9
Good (7–9)
Inventory Load Rating
29.2 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2012
Material
Concrete
Number of Spans
3
Structure Length
10.4 m (34 ft)
Deck Width
4.9 m (16 ft)
Owner
Town/Township Highway Agency
Avg Daily Traffic
129 vehicles/day
Structure Number
B140114XTMUNNBI

How to read this record

This page shows what the last federal inspection recorded, not whether HWY HIRAM BLAIR 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 HWY HIRAM BLAIR against other structures in Hampden and across Massachusetts. Massachusetts 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 HWY HIRAM BLAIR?

HWY HIRAM BLAIR in Hampden, Massachusetts on the FHWA's 0–9 scale.

How often is HWY HIRAM BLAIR inspected?

HWY HIRAM BLAIR'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 129 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. HWY HIRAM BLAIR 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 HWY HIRAM BLAIR?

HWY HIRAM BLAIR has an NBI inventory load rating of 29.2 metric tons.

Who is responsible for maintaining HWY HIRAM BLAIR?

HWY HIRAM BLAIR is owned and maintained by Town/Township Highway Agency.

How old is HWY HIRAM BLAIR and does age affect safety?

HWY HIRAM BLAIR was built in 2012, making it 14 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.