MERCER ST
Carrying MERCER ST over ROCKAWAY RIVER
.1 MILE EAST OF UNION ST., Morris, New Jersey
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MERCER ST
The MERCER ST bridge in Morris, New Jersey carries MERCER ST over ROCKAWAY RIVER. It was built in 1910, making it 116 years old today. The structure is built primarily of concrete and spans 1 section, stretching 13.7 meters (45 feet) end to end. Daily traffic averages 6,446 vehicles, placing it in the moderately-trafficked tier of New Jersey bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show superstructure at 5/9, substructure at 5/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 25.4 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MERCER ST compares
Live comparison across New Jersey.
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 How the historical reference is calculated.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
- 1910
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 13.7 m (45 ft)
- Deck Width
- 15.2 m (50 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 6,446 vehicles/day
- Structure Number
- 1401016
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
How to read this record
This page shows what the last federal inspection recorded, not whether MERCER ST 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 MERCER ST 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 MERCER ST?
MERCER ST in Morris, New Jersey, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is MERCER ST inspected?
MERCER ST'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 6,446 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MERCER ST 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 MERCER ST?
MERCER ST has an NBI inventory load rating of 25.4 metric tons.
Who is responsible for maintaining MERCER ST?
MERCER ST is owned and maintained by County Highway Agency.
How old is MERCER ST and does age affect safety?
MERCER ST was built in 1910, making it 116 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.