FHWA NBI 2024 Inspection record Public-domain dataset

SSR 434

Carrying SSR 434 over MUDDY BROOK

2.8 MI W OF ROUTE 82, Middlesex, Connecticut

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
33 t Inventory load rating

Bridge Snapshot: SSR 434

The SSR 434 bridge in Middlesex, Connecticut carries SSR 434 over MUDDY BROOK. It was built in 1937, making it 89 years old today. It was last reconstructed in 1988, extending its service life. The structure is built primarily of masonry and spans 1 section, stretching 7.3 meters (24 feet) end to end. Daily traffic averages 700 vehicles, placing it in the lower-traffic tier of Connecticut bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 32.7 metric tons.

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

How SSR 434 compares

▼ 12.2
Load rating vs Connecticut average (44.9 t)
Bottom 18%
Lower load rating than 82% of Connecticut bridges
304
Bridges in Middlesex · 10 in Poor condition
SSR 434 32.7 t
Connecticut average 44.9 t

Live comparison across Connecticut.

Historical Sufficiency Rating

PlainBridge-computed
79.9 / 100 - historical 50–79.9 band
Structural adequacy /55
55.0
Serviceability /30
13.0
Essentiality /15
14.9
Special reductions
−3.0

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 How the historical reference is calculated.

Condition Ratings

Superstructure
6/9
Fair (5–6)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
32.7 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1937
Last Reconstructed
1988
Material
Masonry
Number of Spans
1
Structure Length
7.3 m (24 ft)
Deck Width
9.8 m (32 ft)
Owner
State Highway Agency
Avg Daily Traffic
700 vehicles/day
Structure Number
01605

Condition Analysis

  • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
  • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.

How to read this record

This page shows what the last federal inspection recorded, not whether SSR 434 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 SSR 434 against other structures in Middlesex and across Connecticut. Connecticut 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 SSR 434?

SSR 434 in Middlesex, Connecticut, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.

How often is SSR 434 inspected?

SSR 434'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 700 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. SSR 434 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 SSR 434?

SSR 434 has an NBI inventory load rating of 32.7 metric tons.

Who is responsible for maintaining SSR 434?

SSR 434 is owned and maintained by State Highway Agency.

How old is SSR 434 and does age affect safety?

SSR 434 was built in 1937, making it 89 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.