US Bridges

US 422 over Trail & Nbr Blacklick CR

Fair

Cambria County, Pennsylvania · 0.5 MI East of Indiana CO · Structure no. 000000000008526

Built
1930
95 years old, rebuilt 2008
Condition
Fair
inspected September 2023
Type
Arch - Deck
Concrete
Length
70 ft
1 main span
Daily traffic
6,293
2024 count
Owner
State
State Highway Agency

About this bridge

US 422 over Trail & Nbr Blacklick CR is a concrete arch - deck carrying US 422 over Trail & Nbr Blacklick CR in Cambria County, Pennsylvania. It was built in 1930 and reconstructed in 2008, so it is 95 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 6,293 vehicles a day, roughly 17% of them trucks, projected to reach 6,452 by 2032. The structure is 70 ft (21.3 m) long and 37 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesUS 422
CrossesTrail & Nbr Blacklick CR
Location0.5 MI East of Indiana CO
RouteU.S. Route 422
CountyCambria County
StatePennsylvania
Coordinates40.52798, -78.88964
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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating109 US tons
Inventory rating65 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length70 ft (21.3 m)
Longest span70 ft (21.3 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,293 (2024)
Projected traffic6,452 by 2032
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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$974,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 422 over Trail & Nbr Blacklick CR built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2008.

What condition is US 422 over Trail & Nbr Blacklick CR 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 September 2023.

How much traffic does US 422 over Trail & Nbr Blacklick CR carry?

About 6,293 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is US 422 over Trail & Nbr Blacklick CR?

The structure is 70 ft (21.3 m) long with a longest span of 70 ft (21.3 m) and a deck 37 ft wide.

Who owns US 422 over Trail & Nbr Blacklick CR?

It is owned by the State Highway Agency.