US Bridges

Macungie Road over Little Lehigh Creek

PoorPosted for load

Lehigh County, Pennsylvania · North of Sauerkraut Lane · Structure no. 000000000023448

Built
1950
75 years old, rebuilt 2017
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
55 ft
2 main spans
Daily traffic
750
2010 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Macungie Road over Little Lehigh Creek is a steel stringer/multi-beam or girder carrying Macungie Road over Little Lehigh Creek in Lehigh County, Pennsylvania. It was built in 1950 and reconstructed in 2017, so it is 75 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 750 vehicles a day, roughly 1% of them trucks, projected to reach 800 by 2020. The structure is 55 ft (16.8 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMacungie Road
CrossesLittle Lehigh Creek
LocationNorth of Sauerkraut Lane
RouteCity Street 0
Coordinates40.53308, -75.53558
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionOctober 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating32 US tons
Inventory rating22 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans2
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span25 ft (7.6 m)
Deck width20 ft (6.1 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2010)
Projected traffic800 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$41,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Macungie Road over Little Lehigh Creek built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2017.

What condition is Macungie Road over Little Lehigh 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 October 2023.

How much traffic does Macungie Road over Little Lehigh Creek carry?

About 750 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Macungie Road over Little Lehigh Creek?

The structure is 55 ft (16.8 m) long with a longest span of 25 ft (7.6 m) and a deck 20 ft wide.

Who owns Macungie Road over Little Lehigh Creek?

It is owned by the Town or Township Highway Agency.