US Bridges

Davidsons Mill RD over Turnpike Mainline

Fair

Middlesex County, New Jersey · 3.1 MI North of Int 8A · Structure no. M07707R

Built
1990
35 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
376 ft
6 main spans
Daily traffic
2,816
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Davidsons Mill RD over Turnpike Mainline is a steel continuous stringer/multi-beam or girder carrying Davidsons Mill RD over Turnpike Mainline in Middlesex County, New Jersey. It was built in 1990, so it is 35 years old, younger 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 6 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 2,816 vehicles a day, roughly 3% of them trucks, projected to reach 3,437 by 2043. The structure is 376 ft (114.6 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesDavidsons Mill RD
CrossesTurnpike Mainline
Location3.1 MI North of Int 8A
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.39532, -74.45533
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length376 ft (114.6 m)
Longest span79 ft (24.1 m)
Deck width34 ft (10.3 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,816 (2023)
Projected traffic3,437 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$215,000 (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Davidsons Mill RD over Turnpike Mainline built?

It was built in 1990, making it 35 years old in 2025.

What condition is Davidsons Mill RD over Turnpike Mainline 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 May 2023.

How much traffic does Davidsons Mill RD over Turnpike Mainline carry?

About 2,816 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Davidsons Mill RD over Turnpike Mainline?

The structure is 376 ft (114.6 m) long with a longest span of 79 ft (24.1 m) and a deck 34 ft wide.

Who owns Davidsons Mill RD over Turnpike Mainline?

It is owned by the State Toll Authority.