US Bridges

SR 4009 (sbl) over Pa 36 (union Ave)

Fair

Blair County, Pennsylvania · Altoona 10th & Union Ave. · Structure no. 000000000005816

Built
1975
50 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
7,174
2023 count
Owner
State
State Highway Agency

About this bridge

SR 4009 (sbl) over Pa 36 (union Ave) is a prestressed concrete box beam or girders - multiple carrying SR 4009 (sbl) over Pa 36 (union Ave) in Blair County, Pennsylvania. It was built in 1975, so it is 50 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 7,174 vehicles a day, roughly 3% of them trucks, projected to reach 10,954 by 2032. The structure is 63 ft (19.2 m) long and 61 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR 4009 (sbl)
CrossesPa 36 (union Ave)
LocationAltoona 10th & Union Ave.
RouteState Highway 0
CountyBlair County
StatePennsylvania
Coordinates40.51132, -78.40728
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating31 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span62 ft (18.9 m)
Deck width61 ft (18.6 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,174 (2023)
Projected traffic10,954 by 2032
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 4009 (sbl) over Pa 36 (union Ave) built?

It was built in 1975, making it 50 years old in 2025.

What condition is SR 4009 (sbl) over Pa 36 (union Ave) 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 June 2023.

How much traffic does SR 4009 (sbl) over Pa 36 (union Ave) carry?

About 7,174 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is SR 4009 (sbl) over Pa 36 (union Ave)?

The structure is 63 ft (19.2 m) long with a longest span of 62 ft (18.9 m) and a deck 61 ft wide.

Who owns SR 4009 (sbl) over Pa 36 (union Ave)?

It is owned by the State Highway Agency.