US Bridges

T-527 Arch Rock RD over Big Run

Fair

Juniata County, Pennsylvania · 0.1 Mile East Int W T398 · Structure no. 000000000020333

Built
1991
34 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
400
2011 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-527 Arch Rock RD over Big Run is a concrete slab carrying T-527 Arch Rock RD over Big Run in Juniata County, Pennsylvania. It was built in 1991, so it is 34 years old, younger 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 400 vehicles a day, roughly 3% of them trucks, projected to reach 420 by 2031. The structure is 22 ft (6.7 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesT-527 Arch Rock RD
CrossesBig Run
Location0.1 Mile East Int W T398
RouteCity Street 0
CountyJuniata County
StatePennsylvania
Coordinates40.63284, -77.36039
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2011)
Projected traffic420 by 2031
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 T-527 Arch Rock RD over Big Run built?

It was built in 1991, making it 34 years old in 2025.

What condition is T-527 Arch Rock RD over Big Run 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 October 2023.

How much traffic does T-527 Arch Rock RD over Big Run carry?

About 400 vehicles per day (2011 count), of which roughly 3% are trucks.

How long is T-527 Arch Rock RD over Big Run?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 25 ft wide.

Who owns T-527 Arch Rock RD over Big Run?

It is owned by the Town or Township Highway Agency.