FHWA NBI 2024 Inspection record Public-domain dataset

SR 668 - BUTTS BRI

Carrying SR 668 - BUTTS BRI over QUINEBAUG RIVER

0.4 MI FROM ROUTE 169, Windham, Connecticut

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
40 t Inventory load rating

Bridge Snapshot: SR 668 - BUTTS BRI

The SR 668 - BUTTS BRI bridge in Windham, Connecticut carries SR 668 - BUTTS BRI over QUINEBAUG RIVER. It was built in 1937, making it 89 years old today. It was last reconstructed in 2009, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 71.3 meters (234 feet) end to end. Daily traffic averages 2,200 vehicles, placing it in the moderately-trafficked tier of Connecticut bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show a deck rating of 7/9, superstructure at 5/9, substructure at 5/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 39.5 metric tons.

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

How SR 668 - BUTTS BRI compares

▼ 5.4
Load rating vs Connecticut average (44.9 t)
Top 50%
Higher load rating than 50% of Connecticut bridges
264
Bridges in Windham · 22 in Poor condition
SR 668 - BUTTS BRI 39.5 t
Connecticut average 44.9 t

Live comparison across Connecticut.

Historical Sufficiency Rating

PlainBridge-computed
73.1 / 100 - historical 50–79.9 band
Structural adequacy /55
45.0
Serviceability /30
18.9
Essentiality /15
14.2
Special reductions
−5.0

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 How the historical reference is calculated.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
5/9
Fair (5–6)
Substructure
5/9
Fair (5–6)
Inventory Load Rating
39.5 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
2009
Material
Steel
Number of Spans
1
Structure Length
71.3 m (234 ft)
Deck Width
9.4 m (31 ft)
Owner
State Highway Agency
Avg Daily Traffic
2,200 vehicles/day
Structure Number
01649

Condition Analysis

  • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
  • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
  • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.

How to read this record

This page shows what the last federal inspection recorded, not whether SR 668 - BUTTS BRI 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 SR 668 - BUTTS BRI against other structures in Windham 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 SR 668 - BUTTS BRI?

SR 668 - BUTTS BRI in Windham, Connecticut has a deck rating of 7/9, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.

How often is SR 668 - BUTTS BRI inspected?

SR 668 - BUTTS BRI'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 2,200 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. SR 668 - BUTTS BRI 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 SR 668 - BUTTS BRI?

SR 668 - BUTTS BRI has an NBI inventory load rating of 39.5 metric tons.

Who is responsible for maintaining SR 668 - BUTTS BRI?

SR 668 - BUTTS BRI is owned and maintained by State Highway Agency.

How old is SR 668 - BUTTS BRI and does age affect safety?

SR 668 - BUTTS BRI was built in 1937, making it 89 years old and last reconstructed in 2009.

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.