Total bridges
508
Public highway bridges in Morris County
County profile · official public datasets
Morris County, NJ
508 public highway bridges tracked in the FHWA National Bridge Inventory: 19.7% rated Good, 74.4% Fair, 5.9% Poor.
- 508
- Public bridges
- 19.7%
- Good condition
- 5.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Morris County posts a higher-than-median Poor-condition share among rated counties in the state across large county bridge inventory.
- 12th
- of 21 on Poor share
- 5.9%
- Poor-condition share
- 508
- public highway bridges
- 1964
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Morris County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Morris County ranks #12 of 21 New Jersey counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.9%). Morris County, New Jersey contains 508 public highway bridges. Roughly 19.7% are rated “Good,” 74.4% “Fair,” and 5.9% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
19.7%
100 of 508 rated 7-9
Fair condition
74.4%
378 of 508 rated 5-6
Poor condition
5.9%
30 of 508 rated 4 or below
In-state Poor-share rank
#12 of 21
Among New Jersey counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 508 NBI-tracked bridges by lowest applicable component rating.
Good 19.7% (100)
Fair 74.4% (378)
Poor 5.9% (30)
Morris County's Poor-condition bridges carry 347,712 vehicle crossings a day
That is 3% of the county's reported daily bridge traffic on 5.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 11,590 crossings a day against 17,443 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 508 of 508 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
69.3% of Morris County's bridges have passed the 50-year mark
352 of the 508 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 19.7% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 15.5% of the county's Poor-condition bridge traffic
I-80 EASTBOUND over HOWARD BLVD. (CR 615), built 1959, carries 53,919 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 30-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 347,712 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Morris County's bridges were built
508 bridges with a recorded construction year, grouped by decade
- pre-1900 4
Built before 1900
4 bridges
- 1900s 22
1900–1909
22 bridges
- 1910s 10
1910–1919
10 bridges
- 1920s
1920–1929
50 bridges
- 1930s 28
1930–1939
28 bridges
- 1940s 17
1940–1949
17 bridges
- 1950s
1950–1959
63 bridges
- 1960s
1960–1969
91 bridges
- 1970s
1970–1979
79 bridges
- 1980s 33
1980–1989
33 bridges
- 1990s
1990–1999
46 bridges
- 2000s 35
2000–2009
35 bridges
- 2010s 22
2010–2019
22 bridges
- 2020s 8
2020–2029
8 bridges
What this shows Construction peaked in the 1960s, when 91 of the county's bridges still in the inventory were built, which is 17.9% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1964) matches the New Jersey average (1966).
How Morris County compares with New Jersey's closest counties by inventory size
The 5 New Jersey counties nearest Morris County in number of bridges, with their condition splits. Its 5.9% Poor share is the 4th-lowest of these 6. Its average build year of 1964 against a peer-group mean of 1969 is 5 years older.
Showing the 5 closest of 20 New Jersey counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Bergen County | 577 | 19.1% | 76.1% | 4.9% | 1964 |
| Middlesex County | 563 | 23.4% | 72.1% | 4.4% | 1972 |
| Morris County (this page) | 508 | 19.7% | 74.4% | 5.9% | 1964 |
| Essex County | 505 | 16.2% | 81% | 2.8% | 1963 |
| Monmouth County | 505 | 32.9% | 58.2% | 8.9% | 1971 |
| Mercer County | 414 | 40.3% | 50.5% | 9.2% | 1975 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Morris County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Morris County, both outside New Jersey so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside NJ (508 bridges here).
- Oakland County, MI · 508 bridges
- Wood County, OH · 508 bridges
- Douglas County, NE · 509 bridges
- Linn County, IA · 506 bridges
Similar average build year
Nearest mean year-built outside NJ (1964 here).
- Baltimore city County, MD · avg 1964 · 374 bridges
- Ross County, OH · avg 1964 · 356 bridges
- Franklin County, MA · avg 1964 · 314 bridges
- Franklin County, PA · avg 1964 · 294 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (508)
INTERVALE RD-US202
PoorOver: I-287
1.6 MI. NO. OF I-287 &46, Morris, NJ
Built 1963 Load: 38.1 t ADT: 8,245
1ST STREET
PoorOver: GREEN POND BROOK
NEAR BUILDING 1176, Morris, NJ
Built 1959 Load: 39.2 t ADT: 3,200
NJ 124 EB
PoorOver: PASSAIC RIVER
3.2 MILES WEST JCT 24&78, Morris, NJ
Built 1971 Load: 44.5 t ADT: 6,579
NEW ROAD
PoorOver: I-280
1.55 MI EAST OF I-80, Morris, NJ
Built 1970 Load: 50.8 t ADT: 7,813
NJ 124 WB
PoorOver: PASSAIC RIVER
3.2 MILES WEST JCT 24&78, Morris, NJ
Built 1971 Load: 52.6 t ADT: 6,579
BAILEYS MILL ROAD
PoorOver: I-287 SB
5.0 MI. SO. OF JCT. 24, Morris, NJ
Built 1968 Load: 54.4 t ADT: 2,825
HANOVER AVE(CR650)
PoorOver: I-287
0.5 MILE SOUTH OF NJ 24, Morris, NJ
Built 1973 Load: 59.9 t ADT: 24,300
FRANKLIN STREET
PoorOver: I-287
0.19 MI NORTH OF NJ 124, Morris, NJ
Built 1968 Load: 63.5 t ADT: 5,141
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.