US Bridges

U.S. 1B over Five Mile Run

Poor

Mercer County, New Jersey · 1.1 Miles No- of Rt 206 · Structure no. 1102150

Built
1928
97 years old, rebuilt 1938
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
2 main spans
Daily traffic
22,136
2024 count
Owner
State
State Highway Agency

About this bridge

U.S. 1B over Five Mile Run is a steel stringer/multi-beam or girder carrying U.S. 1B over Five Mile Run in Mercer County, New Jersey. It was built in 1928 and reconstructed in 1938, so it is 97 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 22,136 vehicles a day, roughly 4% of them trucks, projected to reach 32,892 by 2044. The structure is 69 ft (21 m) long and 90 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesU.S. 1B
CrossesFive Mile Run
Location1.1 Miles No- of Rt 206
RouteU.S. Route 1B
Coordinates40.25664, -74.72826
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length69 ft (21 m)
Longest span32 ft (9.8 m)
Deck width90 ft (27.4 m)
Roadway width71 ft (21.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,136 (2024)
Projected traffic32,892 by 2044
Trucks4%
Lanes on structure5
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 1B over Five Mile Run built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1938.

What condition is U.S. 1B over Five Mile Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does U.S. 1B over Five Mile Run carry?

About 22,136 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is U.S. 1B over Five Mile Run?

The structure is 69 ft (21 m) long with a longest span of 32 ft (9.8 m) and a deck 90 ft wide.

Who owns U.S. 1B over Five Mile Run?

It is owned by the State Highway Agency.