US Bridges

SR 4025 (lr 39064) over Lyon Creek

Fair

Lehigh County, Pennsylvania · Lyon Valley Road · Structure no. 000000000023400

Built
1964
61 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
677
2024 count
Owner
State
State Highway Agency

About this bridge

SR 4025 (lr 39064) over Lyon Creek is a prestressed concrete box beam or girders - multiple carrying SR 4025 (lr 39064) over Lyon Creek in Lehigh County, Pennsylvania. It was built in 1964, so it is 61 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 677 vehicles a day, roughly 6% of them trucks, projected to reach 707 by 2032. The structure is 39 ft (11.9 m) long and 35 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesSR 4025 (lr 39064)
CrossesLyon Creek
LocationLyon Valley Road
RouteState Highway 0
CountyLehigh County
StatePennsylvania
Coordinates40.62444, -75.67604
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMay 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span38 ft (11.6 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic677 (2024)
Projected traffic707 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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 SR 4025 (lr 39064) over Lyon Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is SR 4025 (lr 39064) over Lyon 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 SR 4025 (lr 39064) over Lyon Creek carry?

About 677 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is SR 4025 (lr 39064) over Lyon Creek?

The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.6 m) and a deck 35 ft wide.

Who owns SR 4025 (lr 39064) over Lyon Creek?

It is owned by the State Highway Agency.