US 287 ML
Carrying US 287 ML over DRY CREEK
Ken Pratt Blvd-Longmont, Boulder, Colorado
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: US 287 ML
The US 287 ML bridge in Boulder, Colorado carries US 287 ML over DRY CREEK. It was built in 1947, making it 79 years old today. It was last reconstructed in 1970, extending its service life. The structure is built primarily of concrete and spans 2 sections, stretching 6.4 meters (21 feet) end to end. Daily traffic averages 22,000 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 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 16.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How US 287 ML compares
Live comparison across Colorado.
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 How the historical reference is calculated.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
- 1947
- Last Reconstructed
- 1970
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 6.4 m (21 ft)
- Deck Width
- 105.2 m (345 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 22,000 vehicles/day
- Structure Number
- D-16-D
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 US 287 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 287 ML against other structures in Boulder 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 287 ML?
US 287 ML in Boulder, Colorado on the FHWA's 0–9 scale.
How often is US 287 ML inspected?
US 287 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 22,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. US 287 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 287 ML?
US 287 ML has an NBI inventory load rating of 16.5 metric tons.
Who is responsible for maintaining US 287 ML?
US 287 ML is owned and maintained by State Highway Agency.
How old is US 287 ML and does age affect safety?
US 287 ML was built in 1947, making it 79 years old and last reconstructed in 1970.
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.