US Bridges

SR145(LR555) over Coplay Creek

Fair

Lehigh County, Pennsylvania · 1 Mi.S.Of PA329 · Structure no. 000000000023129

Built
1941
84 years old, rebuilt 1970
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
40 ft
1 main span
Daily traffic
17,057
2023 count
Owner
State
State Highway Agency

About this bridge

SR145(LR555) over Coplay Creek is a concrete culvert carrying SR145(LR555) over Coplay Creek in Lehigh County, Pennsylvania. It was built in 1941 and reconstructed in 1970, so it is 84 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 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 17,057 vehicles a day, roughly 6% of them trucks, projected to reach 28,836 by 2032. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR145(LR555)
CrossesCoplay Creek
Location1 Mi.S.Of PA329
RouteState Highway 145
CountyLehigh County
StatePennsylvania
Coordinates40.66737, -75.51309
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,057 (2023)
Projected traffic28,836 by 2032
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$473,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR145(LR555) over Coplay Creek built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1970.

What condition is SR145(LR555) over Coplay 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 2023.

How much traffic does SR145(LR555) over Coplay Creek carry?

About 17,057 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR145(LR555) over Coplay Creek?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m).

Who owns SR145(LR555) over Coplay Creek?

It is owned by the State Highway Agency.