US Bridges

SR 4010 (17th St) over I-99 / US 220

Good

Blair County, Pennsylvania · 0.1 Mi. E. of Altoona · Structure no. 000000000005840

Built
1992
33 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
248 ft
2 main spans
Daily traffic
25,718
2023 count
Owner
State
State Highway Agency

About this bridge

SR 4010 (17th St) over I-99 / US 220 is a prestressed concrete stringer/multi-beam or girder carrying SR 4010 (17th St) over I-99 / US 220 in Blair County, Pennsylvania. It was built in 1992, so it is 33 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 25,718 vehicles a day, roughly 4% of them trucks, projected to reach 34,436 by 2032. The structure is 248 ft (75.6 m) long and 88 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSR 4010 (17th St)
CrossesI-99 / US 220
Location0.1 Mi. E. of Altoona
RouteState Highway 0
CountyBlair County
StatePennsylvania
Coordinates40.49337, -78.38349
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length248 ft (75.6 m)
Longest span129 ft (39.3 m)
Deck width88 ft (26.7 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,718 (2023)
Projected traffic34,436 by 2032
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.9 mi (24 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 4010 (17th St) over I-99 / US 220 built?

It was built in 1992, making it 33 years old in 2025.

What condition is SR 4010 (17th St) over I-99 / US 220 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 September 2023.

How much traffic does SR 4010 (17th St) over I-99 / US 220 carry?

About 25,718 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 4010 (17th St) over I-99 / US 220?

The structure is 248 ft (75.6 m) long with a longest span of 129 ft (39.3 m) and a deck 88 ft wide.

Who owns SR 4010 (17th St) over I-99 / US 220?

It is owned by the State Highway Agency.