US Bridges

Pa 747 over Juniata River

Fair

Huntingdon County, Pennsylvania · At Mifflin County Line · Structure no. 000000000018676

Built
1934
91 years old, rebuilt 2018
Condition
Fair
inspected July 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
714 ft
6 main spans
Daily traffic
5,260
2023 count
Owner
State
State Highway Agency

About this bridge

Pa 747 over Juniata River is a prestressed concrete stringer/multi-beam or girder carrying Pa 747 over Juniata River in Huntingdon County, Pennsylvania. It was built in 1934 and reconstructed in 2018, so it is 91 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 5,260 vehicles a day, roughly 3% of them trucks, projected to reach 5,177 by 2032. The structure is 714 ft (217.6 m) long and 49 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesPa 747
CrossesJuniata River
LocationAt Mifflin County Line
RouteState Highway 747
CountyHuntingdon County
StatePennsylvania
Coordinates40.39316, -77.87902
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2022
Inspection intervalevery 48 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length714 ft (217.6 m)
Longest span117 ft (35.7 m)
Deck width49 ft (14.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,260 (2023)
Projected traffic5,177 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 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 Pa 747 over Juniata River built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 2018.

What condition is Pa 747 over Juniata River 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 July 2022.

How much traffic does Pa 747 over Juniata River carry?

About 5,260 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Pa 747 over Juniata River?

The structure is 714 ft (217.6 m) long with a longest span of 117 ft (35.7 m) and a deck 49 ft wide.

Who owns Pa 747 over Juniata River?

It is owned by the State Highway Agency.