US Bridges

Pa Tpk (I-476) over SR 4010 LR39091

Fair

Lehigh County, Pennsylvania · West of Balliettsville · Structure no. 000000000023566

Built
1955
70 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
165 ft
3 main spans
Daily traffic
30,563
2004 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-476) over SR 4010 LR39091 is a steel stringer/multi-beam or girder carrying Pa Tpk (I-476) over SR 4010 LR39091 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 165 ft (50.3 m) long and 64 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesPa Tpk (I-476)
CrossesSR 4010 LR39091
LocationWest of Balliettsville
RouteInterstate 476
CountyLehigh County
StatePennsylvania
Coordinates40.66965, -75.59658
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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
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 rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length165 ft (50.3 m)
Longest span47 ft (14.3 m)
Deck width64 ft (19.5 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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$372,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-476) over SR 4010 LR39091 built?

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

What condition is Pa Tpk (I-476) over SR 4010 LR39091 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 September 2024.

How much traffic does Pa Tpk (I-476) over SR 4010 LR39091 carry?

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

How long is Pa Tpk (I-476) over SR 4010 LR39091?

The structure is 165 ft (50.3 m) long with a longest span of 47 ft (14.3 m) and a deck 64 ft wide.

Who owns Pa Tpk (I-476) over SR 4010 LR39091?

It is owned by the State Toll Authority.