US Bridges

Center St. over Trout Creek

Poor

Lehigh County, Pennsylvania · Emerald Bridge · Structure no. 000000000023484

Built
1961
64 years old
Condition
Poor
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
100
1980 count
Owner
County
County Highway Agency

About this bridge

Center St. over Trout Creek is a prestressed concrete box beam or girders - multiple carrying Center St. over Trout Creek in Lehigh County, Pennsylvania. It was built in 1961, so it is 64 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.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 254 by 2030. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCenter St.
CrossesTrout Creek
LocationEmerald Bridge
RouteCity Street 0
Coordinates40.74548, -75.63486
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
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating87 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1980)
Projected traffic254 by 2030
Trucks10%
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

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 Center St. over Trout Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Center St. over Trout 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 April 2024.

How much traffic does Center St. over Trout Creek carry?

About 100 vehicles per day (1980 count), of which roughly 10% are trucks.

How long is Center St. over Trout Creek?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m).

Who owns Center St. over Trout Creek?

It is owned by the County Highway Agency.