FHWA NBI 2024 Inspection record Public-domain dataset

US 6 ML

Carrying US 6 ML over DRAW

1.0 MI E OF INDIANA AVE, Jefferson, Colorado

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
100 t Inventory load rating

Bridge Snapshot: US 6 ML

The US 6 ML bridge in Jefferson, Colorado carries US 6 ML over DRAW. It was built in 1947, making it 79 years old today. It was last reconstructed in 2010, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 6.8 meters (22 feet) end to end. Daily traffic averages 63,000 vehicles, placing it in the heavily-trafficked tier of Colorado bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show culvert at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 99.9 metric tons.

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

How US 6 ML compares

▲ 62.8
Load rating vs Colorado average (37.1 t)
Top 3%
Higher load rating than 97% of Colorado bridges
464
Bridges in Jefferson · 18 in Poor condition
US 6 ML 99.9 t
Colorado average 37.1 t

Live comparison across Colorado.

Historical Sufficiency Rating

PlainBridge-computed
81.4 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
15.0
Essentiality /15
11.4
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 How the historical reference is calculated.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

Culvert
6/9
Fair (5–6)
Inventory Load Rating
99.9 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1947
Last Reconstructed
2010
Material
Steel
Number of Spans
1
Structure Length
6.8 m (22 ft)
Deck Width
46.9 m (154 ft)
Owner
State Highway Agency
Avg Daily Traffic
63,000 vehicles/day
Structure Number
F-16-CY

How to read this record

This page shows what the last federal inspection recorded, not whether US 6 ML 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 US 6 ML against other structures in Jefferson 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 US 6 ML?

US 6 ML in Jefferson, Colorado on the FHWA's 0–9 scale.

How often is US 6 ML inspected?

US 6 ML'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 63,000 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. US 6 ML 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 US 6 ML?

US 6 ML has an NBI inventory load rating of 99.9 metric tons.

Who is responsible for maintaining US 6 ML?

US 6 ML is owned and maintained by State Highway Agency.

How old is US 6 ML and does age affect safety?

US 6 ML was built in 1947, making it 79 years old and last reconstructed in 2010.

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.