US Bridges

US 22 over Middle Brook

Fair

Somerset County, New Jersey · 0.62 MI E of JCT I-287 · Structure no. 1803150

Built
1929
96 years old, rebuilt 2014
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
1 main span
Daily traffic
63,615
2023 count
Owner
State
State Highway Agency

About this bridge

US 22 over Middle Brook is a steel stringer/multi-beam or girder carrying US 22 over Middle Brook in Somerset County, New Jersey. It was built in 1929 and reconstructed in 2014, so it is 96 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 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 63,615 vehicles a day, roughly 4% of them trucks, projected to reach 77,622 by 2043. The structure is 67 ft (20.4 m) long and 141 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 22
CrossesMiddle Brook
Location0.62 MI E of JCT I-287
RouteU.S. Route 22
Coordinates40.57473, -74.55554
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length67 ft (20.4 m)
Longest span64 ft (19.5 m)
Deck width141 ft (42.9 m)
Roadway width109 ft (33.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63,615 (2023)
Projected traffic77,622 by 2043
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 22 over Middle Brook built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 2014.

What condition is US 22 over Middle Brook 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 August 2023.

How much traffic does US 22 over Middle Brook carry?

About 63,615 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 22 over Middle Brook?

The structure is 67 ft (20.4 m) long with a longest span of 64 ft (19.5 m) and a deck 141 ft wide.

Who owns US 22 over Middle Brook?

It is owned by the State Highway Agency.