County Road 1813
Carrying County Road 1813 over Blue River
26 mi NW of Silverthorne, Summit, Colorado
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: County Road 1813
The County Road 1813 bridge in Summit, Colorado carries County Road 1813 over Blue River. It was built in 1938, making it 88 years old today. The structure is built primarily of steel and spans 1 section, stretching 52.8 meters (173 feet) end to end. Daily traffic averages 10 vehicles, placing it in the lower-traffic tier of Colorado bridges. It is owned and maintained by Bureau of Reclamation.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 6/9, substructure 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 22.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How County Road 1813 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 How the historical reference is calculated.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
- 1938
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 52.8 m (173 ft)
- Deck Width
- 7.3 m (24 ft)
- Owner
- Bureau of Reclamation
- Avg Daily Traffic
- 10 vehicles/day
- Structure Number
- ECA-BT-002
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in fair condition (5/9), 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.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
How to read this record
This page shows what the last federal inspection recorded, not whether County Road 1813 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 County Road 1813 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 County Road 1813?
County Road 1813 in Summit, Colorado has a deck rating of 5/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is County Road 1813 inspected?
County Road 1813'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 10 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. County Road 1813 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 County Road 1813?
County Road 1813 has an NBI inventory load rating of 22.5 metric tons.
Who is responsible for maintaining County Road 1813?
County Road 1813 is owned and maintained by Bureau of Reclamation.
How old is County Road 1813 and does age affect safety?
County Road 1813 was built in 1938, making it 88 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.