US Bridges

I-99 / US 220 Sbl over SR 1001/BUSINESS US 220

Fair

Blair County, Pennsylvania · .5 Mi.S.Of Altoona · Structure no. 000000000005598

Built
1984
41 years old, rebuilt 2013
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
144 ft
1 main span
Daily traffic
15,675
2024 count
Owner
State
State Highway Agency

About this bridge

I-99 / US 220 Sbl over SR 1001/BUSINESS US 220 is a steel stringer/multi-beam or girder carrying I-99 / US 220 Sbl over SR 1001/BUSINESS US 220 in Blair County, Pennsylvania. It was built in 1984 and reconstructed in 2013, so it is 41 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 15,675 vehicles a day, roughly 13% of them trucks, projected to reach 20,116 by 2032. The structure is 144 ft (43.9 m) long and 46 ft wide.

Location

Open in Google Maps
CarriesI-99 / US 220 Sbl
CrossesSR 1001/BUSINESS US 220
Location.5 Mi.S.Of Altoona
RouteInterstate 99
CountyBlair County
StatePennsylvania
Coordinates40.46562, -78.40763
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length144 ft (43.9 m)
Longest span138 ft (42.1 m)
Deck width46 ft (13.9 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,675 (2024)
Projected traffic20,116 by 2032
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-99 / US 220 Sbl over SR 1001/BUSINESS US 220 built?

It was built in 1984, making it 41 years old in 2025. It was reconstructed in 2013.

What condition is I-99 / US 220 Sbl over SR 1001/BUSINESS US 220 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 I-99 / US 220 Sbl over SR 1001/BUSINESS US 220 carry?

About 15,675 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is I-99 / US 220 Sbl over SR 1001/BUSINESS US 220?

The structure is 144 ft (43.9 m) long with a longest span of 138 ft (42.1 m) and a deck 46 ft wide.

Who owns I-99 / US 220 Sbl over SR 1001/BUSINESS US 220?

It is owned by the State Highway Agency.