FDR 474
Carrying FDR 474 over RIO CHAMA
2.7 MI NW/O BIG EDDY BOAT, Rio Arriba, New Mexico
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: FDR 474
The FDR 474 bridge in Rio Arriba, New Mexico carries FDR 474 over RIO CHAMA. It was built in 1989, making it 37 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 21.6 meters (71 feet) end to end. Daily traffic averages 99 vehicles, placing it in the lower-traffic tier of New Mexico bridges. It is owned and maintained by U.S. Forest Service.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 7/9. 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 13.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How FDR 474 compares
Live comparison across New Mexico.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1989
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 21.6 m (71 ft)
- Deck Width
- 3.7 m (12 ft)
- Owner
- U.S. Forest Service
- Avg Daily Traffic
- 99 vehicles/day
- Structure Number
- 031001000001001
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
This page shows what the last federal inspection recorded, not whether FDR 474 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 FDR 474 against other structures in Rio Arriba and across New Mexico. New Mexico 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 FDR 474?
FDR 474 in Rio Arriba, New Mexico has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is FDR 474 inspected?
FDR 474'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 99 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. FDR 474 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 FDR 474?
FDR 474 has an NBI inventory load rating of 13.0 metric tons.
Who is responsible for maintaining FDR 474?
FDR 474 is owned and maintained by U.S. Forest Service.
How old is FDR 474 and does age affect safety?
FDR 474 was built in 1989, making it 37 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.
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.