6TH STREET
Carrying 6TH STREET over BLUE RIVER
AT INTERSECTION WITH SH 9, Summit, Colorado
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
6TH STREET in Summit, Colorado sits above 77% of rated Colorado bridges on inventory load rating (42 t), while its 1981 build year is earlier than 37% of Summit's recorded-year cohort (57 bridges).
6TH STREET in Summit, Colorado is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1981, it carries 1 rated component 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:SILVTH-6THST
LATE-CENTURY · CONCRETE · LONG-SPAN-RUN · CULVERT-LED · ARTERIAL-ADT · HEAVY-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- CONCRETE Concrete
- LONG-SPAN-RUN 8 spans
- CULVERT-LED Culvert-led
- ARTERIAL-ADT Arterial ADT
- HEAVY-LOAD Heavy 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: 6TH STREET
The 6TH STREET bridge in Summit, Colorado carries 6TH STREET over BLUE RIVER. It was built in 1981, making it 45 years old today. The structure is built primarily of concrete and spans 8 sections, stretching 31.4 meters (103 feet) end to end. Daily traffic averages 2,091 vehicles, placing it in the moderately-trafficked tier of Colorado bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How 6TH STREET compares
Age against the county: built in 1981, earlier than 21 of Summit's 57 bridges with a recorded construction year (37%), against a county median build year of 1977. 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).
6TH STREET vs every rated Colorado bridge
Inventory load rating (metric tons), FHWA NBI, this state
42 Top 23% higher than 77% 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.
Summit inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 57 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
- 1981
- Material
- Concrete
- Number of Spans
- 8
- Structure Length
- 31.4 m (103 ft)
- Deck Width
- 14.9 m (49 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 2,091 vehicles/day
- Structure Number
- SILVTH-6THST
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 6TH STREET 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 6TH STREET against other structures in Summit 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 6TH STREET?
6TH STREET in Summit, Colorado on the FHWA's 0–9 scale.
How often is 6TH STREET inspected?
6TH STREET'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 2,091 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 6TH STREET 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 6TH STREET?
6TH STREET has an NBI inventory load rating of 41.6 metric tons.
Who is responsible for maintaining 6TH STREET?
6TH STREET is owned and maintained by City/Municipal Highway Agency.
How old is 6TH STREET and does age affect safety?
6TH STREET was built in 1981, making it 45 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.
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.