US Bridges

Furnace Road over Trout Creek

PoorPosted for load

Lehigh County, Pennsylvania · Lehigh Furnace · Structure no. 000000000023486

Built
1935
90 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
210
2010 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Furnace Road over Trout Creek is a steel stringer/multi-beam or girder carrying Furnace Road over Trout Creek in Lehigh County, Pennsylvania. It was built in 1935, so it is 90 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 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. Its operating status is: posted for load restriction.

It carries about 210 vehicles a day, roughly 1% of them trucks, projected to reach 220 by 2020. The structure is 28 ft (8.5 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFurnace Road
CrossesTrout Creek
LocationLehigh Furnace
RouteCity Street 0
Coordinates40.74224, -75.67984
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span25 ft (7.6 m)
Deck width22 ft (6.8 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2010)
Projected traffic220 by 2020
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$103,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Furnace Road over Trout Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is Furnace Road over Trout Creek 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 August 2024.

How much traffic does Furnace Road over Trout Creek carry?

About 210 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Furnace Road over Trout Creek?

The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m) and a deck 22 ft wide.

Who owns Furnace Road over Trout Creek?

It is owned by the Town or Township Highway Agency.