US Bridges

Auburn Street over Trout Creek

Fair

Lehigh County, Pennsylvania · Near South Fourth Street · Structure no. 000000000023507

Built
1978
47 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
1,200
2010 count
Owner
County
County Highway Agency

About this bridge

Auburn Street over Trout Creek is a prestressed concrete box beam or girders - multiple carrying Auburn Street over Trout Creek in Lehigh County, Pennsylvania. It was built in 1978, so it is 47 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 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 1,200 vehicles a day, roughly 1% of them trucks, projected to reach 1,300 by 2020. The structure is 63 ft (19.2 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAuburn Street
CrossesTrout Creek
LocationNear South Fourth Street
RouteCity Street 0B0
Coordinates40.59624, -75.46066
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span62 ft (18.9 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2010)
Projected traffic1,300 by 2020
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Auburn Street over Trout Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Auburn Street over Trout 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 May 2024.

How much traffic does Auburn Street over Trout Creek carry?

About 1,200 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Auburn Street over Trout Creek?

The structure is 63 ft (19.2 m) long with a longest span of 62 ft (18.9 m) and a deck 38 ft wide.

Who owns Auburn Street over Trout Creek?

It is owned by the County Highway Agency.