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Ramp SISA over Njtpk (I-95)

Mercer County, New Jersey · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Ramp SISA over Njtpk (I-95) in Mercer County, New Jersey, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
It was built in 2014, making it 11 years old at the 2025 inventory.
It carries about 5,800 vehicles a day (traffic count year 2024).
It is one of 165 of the 413 inventoried bridges in Mercer County rated good (40.0%); 36 (8.7%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 480 ft
Location	Service Area 6N
NBI structure number	M057950
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the New Jersey department of transportation.

Bridge	Built	Vehicles/day	Condition
Route 29 Rampb over Assunpink Creek	1969	163,000	Fair
Nj Tpk(i-95) over Cedar Swamp Brook	1950	128,068	Fair
US 1 over Duck Pond Run	1928	120,147	Fair
I-295 Southbound over Franklin Corner Road	1973	100,463	Fair
Nj Tpk (I-95) over Nj 33	1950	99,482	Fair
Nsi & Sni Roadways over Monmouth Street	1950	99,482	Fair