US Bridges

Pa 100(LR 486) over Swabia Creek

Fair

Lehigh County, Pennsylvania · Main St. Macungie · Structure no. 000000000023083

Built
1969
56 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
11,577
2023 count
Owner
State
State Highway Agency

About this bridge

Pa 100(LR 486) over Swabia Creek is a prestressed concrete box beam or girders - multiple carrying Pa 100(LR 486) over Swabia Creek in Lehigh County, Pennsylvania. It was built in 1969, so it is 56 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 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 11,577 vehicles a day, roughly 7% of them trucks, projected to reach 21,319 by 2032. The structure is 36 ft (11 m) long and 63 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPa 100(LR 486)
CrossesSwabia Creek
LocationMain St. Macungie
RouteState Highway 100
CountyLehigh County
StatePennsylvania
Coordinates40.51706, -75.55828
Functional classUrban Other Principal Arterial

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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span33 ft (10.1 m)
Deck width63 ft (19.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,577 (2023)
Projected traffic21,319 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa 100(LR 486) over Swabia Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Pa 100(LR 486) over Swabia Creek 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 July 2024.

How much traffic does Pa 100(LR 486) over Swabia Creek carry?

About 11,577 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Pa 100(LR 486) over Swabia Creek?

The structure is 36 ft (11 m) long with a longest span of 33 ft (10.1 m) and a deck 63 ft wide.

Who owns Pa 100(LR 486) over Swabia Creek?

It is owned by the State Highway Agency.