CR 510 (MENDHAM RD
Carrying CR 510 (MENDHAM RD over N BRANCH RARITAN RIVER
3.4 MI EAST CO RT 513, Morris, New Jersey
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
CR 510 (MENDHAM RD in Morris, New Jersey sits above 4% of rated New Jersey bridges on inventory load rating (18 t), while its 1972 build year is earlier than 35% of Morris's recorded-year cohort (508 bridges).
CR 510 (MENDHAM RD in Morris, New Jersey is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1972, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 5. The lowest applicable rating sets the federal condition category, so this Fair 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 NJ:1400628
INTERSTATE-ERA · PRESTRESS · SINGLE-SPAN · TIED-CTRL · HEAVY-ADT · LIGHT-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- HEAVY-ADT Heavy ADT
- LIGHT-LOAD Light load
- CAT-FAIR Fair
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: CR 510 (MENDHAM RD
The CR 510 (MENDHAM RD bridge in Morris, New Jersey carries CR 510 (MENDHAM RD over N BRANCH RARITAN RIVER. It was built in 1972, making it 54 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 14.0 meters (46 feet) end to end. Daily traffic averages 11,686 vehicles, placing it in the heavily-trafficked tier of New Jersey bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, substructure at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How CR 510 (MENDHAM RD compares
Age against the county: built in 1972, earlier than 180 of Morris's 508 bridges with a recorded construction year (35%), against a county median build year of 1966. This is one of the newer structures in its county.
Live comparison across New Jersey bridges with a recorded inventory load rating (6,826 of 6,827 rated).
CR 510 (MENDHAM RD vs every rated New Jersey bridge
Inventory load rating (metric tons), FHWA NBI, this state
18 Top 96% higher than 4% of 6,826 bridges
rated New Jersey 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.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Morris inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 508 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
- 1972
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 14.0 m (46 ft)
- Deck Width
- 17.4 m (57 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 11,686 vehicles/day
- Structure Number
- 1400628
Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 5/9, 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.
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 CR 510 (MENDHAM RD 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 CR 510 (MENDHAM RD against other structures in Morris and across New Jersey. New Jersey 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 CR 510 (MENDHAM RD?
CR 510 (MENDHAM RD in Morris, New Jersey has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is CR 510 (MENDHAM RD inspected?
CR 510 (MENDHAM RD'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 11,686 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CR 510 (MENDHAM RD 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 CR 510 (MENDHAM RD?
CR 510 (MENDHAM RD has an NBI inventory load rating of 18.1 metric tons.
Who is responsible for maintaining CR 510 (MENDHAM RD?
CR 510 (MENDHAM RD is owned and maintained by County Highway Agency.
How old is CR 510 (MENDHAM RD and does age affect safety?
CR 510 (MENDHAM RD was built in 1972, making it 54 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.