US Bridges

High ST over Lehigh Canal + Norfork

PoorClosed to traffic

Northampton County, Pennsylvania · 1 Mile East of LR48010 · Structure no. 000000000028923

Built
1910
115 years old, rebuilt 1949
Condition
Poor
inspected June 2023
Type
Truss - Thru
Steel
Length
137 ft
1 main span
Daily traffic
80
1980 count
Owner
County
County Highway Agency

About this bridge

High ST over Lehigh Canal + Norfork is a steel truss - thru carrying High ST over Lehigh Canal + Norfork in Northampton County, Pennsylvania. It was built in 1910 and reconstructed in 1949, so it is 115 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 1 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. Its operating status is: closed to all traffic.

It carries about 80 vehicles a day, projected to reach 203 by 2030. The structure is 137 ft (41.8 m) long and 25 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesHigh ST
CrossesLehigh Canal + Norfork
Location1 Mile East of LR48010
RouteCity Street 0
Coordinates40.66968, -75.2347
Functional classRural Local

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.
Superstructure1 Imminent FailureMajor deterioration or section loss present in critical structural components. Bridge is closed to traffic but corrective action may put it back in light service.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckOpen grating
Main spans1
Design loadH 15
Structure length137 ft (41.8 m)
Longest span126 ft (38.4 m)
Deck width25 ft (7.6 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (1980)
Projected traffic203 by 2030
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$332,000
NavigationNo navigation control on waterway

Frequently asked questions

When was High ST over Lehigh Canal + Norfork built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1949.

What condition is High ST over Lehigh Canal + Norfork 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 June 2023.

How much traffic does High ST over Lehigh Canal + Norfork carry?

About 80 vehicles per day (1980 count).

How long is High ST over Lehigh Canal + Norfork?

The structure is 137 ft (41.8 m) long with a longest span of 126 ft (38.4 m) and a deck 25 ft wide.

Who owns High ST over Lehigh Canal + Norfork?

It is owned by the County Highway Agency.