FHWA NBI 2024 Inspection record Public-domain dataset

Boggy Bayou Rd

Carrying Boggy Bayou Rd over CREEK

LOGMI 5.8 MI E Hwy 129, Concordia, Louisiana

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
17 t Inventory load rating

Bridge Snapshot: Boggy Bayou Rd

The Boggy Bayou Rd bridge in Concordia, Louisiana carries Boggy Bayou Rd over CREEK. It was built in 1960, making it 66 years old today. The structure is built primarily of wood or timber and spans 3 sections, stretching 14.0 meters (46 feet) end to end. Average daily traffic is not reported for this structure. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 6/9, superstructure at 4/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 17.1 metric tons.

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

How Boggy Bayou Rd compares

▼ 15.2
Load rating vs Louisiana average (32.3 t)
Bottom 10%
Lower load rating than 90% of Louisiana bridges
42
Bridges in Concordia · 4 in Poor condition
Boggy Bayou Rd 17.1 t
Louisiana average 32.3 t

Live comparison across Louisiana.

Historical Sufficiency Rating

PlainBridge-computed
36.0 / 100 - historical 20–49.9 band
Structural adequacy /55
10.5
Serviceability /30
10.5
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 How the historical reference is calculated.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
6/9
Fair (5–6)
Superstructure
4/9
Poor (1–4)
Substructure
4/9
Poor (1–4)
Inventory Load Rating
17.1 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1960
Material
Wood or Timber
Number of Spans
3
Structure Length
14.0 m (46 ft)
Deck Width
5.5 m (18 ft)
Owner
County Highway Agency
Structure Number
581531299913821

Condition Analysis

  • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
  • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
  • The substructure (piers and abutments) is in poor condition (4/9), showing advanced deterioration that may require priority repair.

How to read this record

Boggy Bayou Rd is in the federal Poor condition category. That is a component-based result, not a closure order.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
  • Compare Boggy Bayou Rd against other structures in Concordia and across Louisiana. Louisiana 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 Boggy Bayou Rd?

Boggy Bayou Rd in Concordia, Louisiana has a deck rating of 6/9, superstructure rating of 4/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.

How often is Boggy Bayou Rd inspected?

Boggy Bayou Rd's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval.

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

FHWA retired that reported status beginning with the 2018 archive. Boggy Bayou Rd is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for Boggy Bayou Rd?

Boggy Bayou Rd has an NBI inventory load rating of 17.1 metric tons.

Who is responsible for maintaining Boggy Bayou Rd?

Boggy Bayou Rd is owned and maintained by County Highway Agency.

How old is Boggy Bayou Rd and does age affect safety?

Boggy Bayou Rd was built in 1960, making it 66 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.