US Bridges

SR 322-US 322 W.B. over Trib Laurel Run

Good

Mifflin County, Pennsylvania · Milroy · Structure no. 000000000040618

Built
1999
26 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
214 ft
3 main spans
Daily traffic
8,666
2024 count
Owner
State
State Highway Agency

About this bridge

SR 322-US 322 W.B. over Trib Laurel Run is a prestressed concrete continuous box beam or girders - multiple carrying SR 322-US 322 W.B. over Trib Laurel Run in Mifflin County, Pennsylvania. It was built in 1999, so it is 26 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,666 vehicles a day, roughly 21% of them trucks, projected to reach 8,524 by 2043. The structure is 214 ft (65.2 m) long and 44 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

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CarriesSR 322-US 322 W.B.
CrossesTrib Laurel Run
LocationMilroy
RouteU.S. Route 322
CountyMifflin County
StatePennsylvania
Coordinates40.71993, -77.60185
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating54 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length214 ft (65.2 m)
Longest span72 ft (21.9 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,666 (2024)
Projected traffic8,524 by 2043
Trucks21%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 322-US 322 W.B. over Trib Laurel Run built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR 322-US 322 W.B. over Trib Laurel Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does SR 322-US 322 W.B. over Trib Laurel Run carry?

About 8,666 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is SR 322-US 322 W.B. over Trib Laurel Run?

The structure is 214 ft (65.2 m) long with a longest span of 72 ft (21.9 m) and a deck 44 ft wide.

Who owns SR 322-US 322 W.B. over Trib Laurel Run?

It is owned by the State Highway Agency.