MONTGOMERY ST
Carrying MONTGOMERY ST over ASSUNPINK CREEK
0.13 MI N OF MARKET ST, Mercer, New Jersey
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MONTGOMERY ST
The MONTGOMERY ST bridge in Mercer, New Jersey carries MONTGOMERY ST over ASSUNPINK CREEK. It was built in 1873, making it 153 years old today. It was last reconstructed in 1950, extending its service life. The structure is built primarily of masonry and spans 2 sections, stretching 18.0 meters (59 feet) end to end. Daily traffic averages 135 vehicles, placing it in the lower-traffic tier of New Jersey bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show superstructure at 4/9, substructure at 5/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 17.2 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MONTGOMERY 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 How the historical reference is calculated.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
- 1873
- Last Reconstructed
- 1950
- Material
- Masonry
- Number of Spans
- 2
- Structure Length
- 18.0 m (59 ft)
- Deck Width
- 15.0 m (49 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 135 vehicles/day
- Structure Number
- 1100051
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
- • The substructure (piers and abutments) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
How to read this record
MONTGOMERY ST is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare MONTGOMERY ST against other structures in Mercer 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 MONTGOMERY ST?
MONTGOMERY ST in Mercer, New Jersey, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is MONTGOMERY ST inspected?
MONTGOMERY 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 135 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MONTGOMERY ST is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for MONTGOMERY ST?
MONTGOMERY ST has an NBI inventory load rating of 17.2 metric tons.
Who is responsible for maintaining MONTGOMERY ST?
MONTGOMERY ST is owned and maintained by County Highway Agency.
How old is MONTGOMERY ST and does age affect safety?
MONTGOMERY ST was built in 1873, making it 153 years old and last reconstructed in 1950.
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.