US Bridges

Pa Tpk (I-476) over T-665

Fair

Lehigh County, Pennsylvania · South of Neffs Borough · Structure no. 000000000023567

Built
1955
70 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
118 ft
3 main spans
Daily traffic
30,563
2004 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-476) over T-665 is a steel stringer/multi-beam or girder carrying Pa Tpk (I-476) over T-665 in Lehigh County, Pennsylvania. It was built in 1955, so it is 70 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 30,563 vehicles a day, roughly 16% of them trucks, projected to reach 39,946 by 2030. The structure is 118 ft (36 m) long and 63 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesPa Tpk (I-476)
CrossesT-665
LocationSouth of Neffs Borough
RouteInterstate 476
CountyLehigh County
StatePennsylvania
Coordinates40.67636, -75.59869
Functional classRural Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length118 ft (36 m)
Longest span38 ft (11.6 m)
Deck width63 ft (19.3 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,563 (2004)
Projected traffic39,946 by 2030
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$199,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-476) over T-665 built?

It was built in 1955, making it 70 years old in 2025.

What condition is Pa Tpk (I-476) over T-665 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 Pa Tpk (I-476) over T-665 carry?

About 30,563 vehicles per day (2004 count), of which roughly 16% are trucks.

How long is Pa Tpk (I-476) over T-665?

The structure is 118 ft (36 m) long with a longest span of 38 ft (11.6 m) and a deck 63 ft wide.

Who owns Pa Tpk (I-476) over T-665?

It is owned by the State Toll Authority.