N3100
Carrying N3100 over CREEK
4.2 MI N OF US 70 & SH76N, Carter, Oklahoma
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
N3100 in Carter, Oklahoma sits above 26% of rated Oklahoma bridges on inventory load rating (22 t), while its 1992 build year is earlier than 49% of Carter's recorded-year cohort (339 bridges).
N3100 in Carter, Oklahoma is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1992, 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 OK:024770000000000
LATE-CENTURY · CONCRETE · MULTI-SPAN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- CONCRETE Concrete
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local 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: N3100
The N3100 bridge in Carter, Oklahoma carries N3100 over CREEK. It was built in 1992, making it 34 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 6.4 meters (21 feet) end to end. Daily traffic averages 260 vehicles, placing it in the lower-traffic tier of Oklahoma 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 N3100 compares
Age against the county: built in 1992, earlier than 166 of Carter's 339 bridges with a recorded construction year (49%), against a county median build year of 1992.
Live comparison across Oklahoma bridges with a recorded inventory load rating (22,909 of 22,917 rated).
N3100 vs every rated Oklahoma bridge
Inventory load rating (metric tons), FHWA NBI, this state
22 Top 74% higher than 26% of 22,909 bridges
rated Oklahoma 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.
Carter inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 339 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
- 1992
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 6.4 m (21 ft)
- Deck Width
- 12.8 m (42 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 260 vehicles/day
- Structure Number
- 024770000000000
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 N3100 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 N3100 against other structures in Carter and across Oklahoma. Oklahoma 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 N3100?
N3100 in Carter, Oklahoma on the FHWA's 0–9 scale.
How often is N3100 inspected?
N3100'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 260 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. N3100 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 N3100?
N3100 has an NBI inventory load rating of 21.8 metric tons.
Who is responsible for maintaining N3100?
N3100 is owned and maintained by City/Municipal Highway Agency.
How old is N3100 and does age affect safety?
N3100 was built in 1992, making it 34 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.