US Bridges

T-491 Adams Crsg R over N.Br.Blacklick Creek

Good

Cambria County, Pennsylvania · 1.2 Mi.Nw.Of Belsano · Structure no. 000000000008738

Built
2008
17 years old
Condition
Good
inspected November 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
50
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-491 Adams Crsg R over N.Br.Blacklick Creek is a prestressed concrete box beam or girders - multiple carrying T-491 Adams Crsg R over N.Br.Blacklick Creek in Cambria County, Pennsylvania. It was built in 2008, so it is 17 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 50 vehicles a day, projected to reach 59 by 2044. The structure is 74 ft (22.6 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT-491 Adams Crsg R
CrossesN.Br.Blacklick Creek
Location1.2 Mi.Nw.Of Belsano
RouteCity Street 0
Coordinates40.543, -78.87992
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating77.1 US tons
Inventory rating43 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length74 ft (22.6 m)
Longest span72 ft (21.9 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic59 by 2044
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$859,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-491 Adams Crsg R over N.Br.Blacklick Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is T-491 Adams Crsg R over N.Br.Blacklick Creek 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 November 2022.

How much traffic does T-491 Adams Crsg R over N.Br.Blacklick Creek carry?

About 50 vehicles per day (2024 count).

How long is T-491 Adams Crsg R over N.Br.Blacklick Creek?

The structure is 74 ft (22.6 m) long with a longest span of 72 ft (21.9 m) and a deck 25 ft wide.

Who owns T-491 Adams Crsg R over N.Br.Blacklick Creek?

It is owned by the Town or Township Highway Agency.