US Bridges

Nj 27 over Robinson Br Rahway River

Fair

Union County, New Jersey · 1.1 MI North of Rt 35 JCT · Structure no. 2006151

Built
1867
158 years old
Condition
Fair
inspected March 2024
Type
Arch - Deck
Masonry
Length
62 ft
3 main spans
Daily traffic
26,650
2024 count
Owner
State
State Highway Agency

About this bridge

Nj 27 over Robinson Br Rahway River is a masonry arch - deck carrying Nj 27 over Robinson Br Rahway River in Union County, New Jersey. It was built in 1867, so it is 158 years old, older than the New Jersey average of 58.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 26,650 vehicles a day, roughly 4% of them trucks, projected to reach 32,520 by 2044. The structure is 62 ft (18.9 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNj 27
CrossesRobinson Br Rahway River
Location1.1 MI North of Rt 35 JCT
RouteState Highway 27
CountyUnion County
StateNew Jersey
Coordinates40.61058, -74.28617
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans3
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span18 ft (5.5 m)
Deck width81 ft (24.7 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,650 (2024)
Projected traffic32,520 by 2044
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$426,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nj 27 over Robinson Br Rahway River built?

It was built in 1867, making it 158 years old in 2025.

What condition is Nj 27 over Robinson Br Rahway River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Nj 27 over Robinson Br Rahway River carry?

About 26,650 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Nj 27 over Robinson Br Rahway River?

The structure is 62 ft (18.9 m) long with a longest span of 18 ft (5.5 m) and a deck 81 ft wide.

Who owns Nj 27 over Robinson Br Rahway River?

It is owned by the State Highway Agency.