US Bridges

T459 Red Mill RD over North Br.Blacklick Creek

Good

Cambria County, Pennsylvania · 2 Mi.W.Of Belsano · Structure no. 000000000068131

Built
2023
2 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
200
2023 count
Owner
County
County Highway Agency

About this bridge

T459 Red Mill RD over North Br.Blacklick Creek is a prestressed concrete stringer/multi-beam or girder carrying T459 Red Mill RD over North Br.Blacklick Creek in Cambria County, Pennsylvania. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, roughly 5% of them trucks, projected to reach 200 by 2043. The structure is 100 ft (30.5 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesT459 Red Mill RD
CrossesNorth Br.Blacklick Creek
Location2 Mi.W.Of Belsano
RouteCity Street 0T459
Coordinates40.51586, -78.90312
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
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.3 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length100 ft (30.5 m)
Longest span100 ft (30.5 m)
Deck width26 ft (8 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic200 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T459 Red Mill RD over North Br.Blacklick Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is T459 Red Mill RD over North 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 December 2023.

How much traffic does T459 Red Mill RD over North Br.Blacklick Creek carry?

About 200 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is T459 Red Mill RD over North Br.Blacklick Creek?

The structure is 100 ft (30.5 m) long with a longest span of 100 ft (30.5 m) and a deck 26 ft wide.

Who owns T459 Red Mill RD over North Br.Blacklick Creek?

It is owned by the County Highway Agency.