US Bridges

I-78EB(LR 1045) over T-386(MOCKINGBIRD Lane)

Fair

Northampton County, Pennsylvania · Over Mockingbird Lane · Structure no. 000000000028538

Built
1988
37 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
33,843
2024 count
Owner
State
State Highway Agency

About this bridge

I-78EB(LR 1045) over T-386(MOCKINGBIRD Lane) is a prestressed concrete stringer/multi-beam or girder carrying I-78EB(LR 1045) over T-386(MOCKINGBIRD Lane) in Northampton County, Pennsylvania. It was built in 1988, so it is 37 years old, younger 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 6 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 33,843 vehicles a day, roughly 21% of them trucks, projected to reach 39,544 by 2032. The structure is 106 ft (32.3 m) long and 48 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesI-78EB(LR 1045)
CrossesT-386(MOCKINGBIRD Lane)
LocationOver Mockingbird Lane
RouteInterstate 78
CountyNorthampton County
StatePennsylvania
Coordinates40.59812, -75.3195
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating65 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span102 ft (31.1 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,843 (2024)
Projected traffic39,544 by 2032
Trucks21%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-78EB(LR 1045) over T-386(MOCKINGBIRD Lane) built?

It was built in 1988, making it 37 years old in 2025.

What condition is I-78EB(LR 1045) over T-386(MOCKINGBIRD Lane) 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 I-78EB(LR 1045) over T-386(MOCKINGBIRD Lane) carry?

About 33,843 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is I-78EB(LR 1045) over T-386(MOCKINGBIRD Lane)?

The structure is 106 ft (32.3 m) long with a longest span of 102 ft (31.1 m) and a deck 48 ft wide.

Who owns I-78EB(LR 1045) over T-386(MOCKINGBIRD Lane)?

It is owned by the State Highway Agency.