E-470 NB
Carrying E-470 NB over Quincy Avenue
13.31 MI FROM I25, Arapahoe, Colorado
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
E-470 NB in Arapahoe, Colorado sits above 41% of rated Colorado bridges on inventory load rating (32 t), while its 1997 build year is earlier than 29% of Arapahoe's recorded-year cohort (391 bridges).
E-470 NB in Arapahoe, Colorado is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1997, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure CO:E-470-13.31A
LATE-CENTURY · PRESTRESS · MULTI-SPAN · TIED-CTRL · HEAVY-ADT · STANDARD-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- PRESTRESS Prestressed concrete
- MULTI-SPAN 2 spans
- TIED-CTRL Tied control
- HEAVY-ADT Heavy ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: E-470 NB
The E-470 NB bridge in Arapahoe, Colorado carries E-470 NB over Quincy Avenue. It was built in 1997, making it 29 years old today. It was last reconstructed in 2017, extending its service life. The structure is built primarily of prestressed concrete continuous and spans 2 sections, stretching 66.9 meters (219 feet) end to end. Daily traffic averages 22,265 vehicles, placing it in the heavily-trafficked tier of Colorado bridges. It is owned and maintained by Local Toll Authority.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range.
How E-470 NB compares
Age against the county: built in 1997, earlier than 115 of Arapahoe's 391 bridges with a recorded construction year (29%), against a county median build year of 1986. This is one of the newer structures in its county.
Live comparison across Colorado bridges with a recorded inventory load rating (8,962 of 8,965 rated).
E-470 NB vs every rated Colorado bridge
Inventory load rating (metric tons), FHWA NBI, this state
32 Top 59% higher than 41% of 8,962 bridges
rated Colorado bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Arapahoe inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 391 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1997
- Last Reconstructed
- 2017
- Material
- Prestressed Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 66.9 m (219 ft)
- Deck Width
- 22.6 m (74 ft)
- Owner
- Local Toll Authority
- Avg Daily Traffic
- 22,265 vehicles/day
- Structure Number
- E-470-13.31A
Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether E-470 NB 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 E-470 NB against other structures in Arapahoe and across Colorado. Colorado 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 E-470 NB?
E-470 NB in Arapahoe, Colorado has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is E-470 NB inspected?
E-470 NB'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 22,265 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. E-470 NB 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 E-470 NB?
E-470 NB has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining E-470 NB?
E-470 NB is owned and maintained by Local Toll Authority.
How old is E-470 NB and does age affect safety?
E-470 NB was built in 1997, making it 29 years old and last reconstructed in 2017.
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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.