US Bridges

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

Fair

Blair County, Pennsylvania · .5 Mi.S.Of Altoona · Structure no. 000000000005597

Built
1984
41 years old, rebuilt 2013
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
143 ft
1 main span
Daily traffic
17,022
2024 count
Owner
State
State Highway Agency

About this bridge

I-99 / US 220 Nbl over SR 1001/BUSINESS US 220 is a steel stringer/multi-beam or girder carrying I-99 / US 220 Nbl 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 17,022 vehicles a day, roughly 11% of them trucks, projected to reach 20,767 by 2032. The structure is 143 ft (43.6 m) long and 66 ft wide.

Location

Open in Google Maps
CarriesI-99 / US 220 Nbl
CrossesSR 1001/BUSINESS US 220
Location.5 Mi.S.Of Altoona
RouteInterstate 99
CountyBlair County
StatePennsylvania
Coordinates40.46539, -78.40803
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 48 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 rating97 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span138 ft (42.1 m)
Deck width66 ft (20 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,022 (2024)
Projected traffic20,767 by 2032
Trucks11%
Lanes on structure3
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$335,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-99 / US 220 Nbl 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 Nbl 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 Nbl over SR 1001/BUSINESS US 220 carry?

About 17,022 vehicles per day (2024 count), of which roughly 11% are trucks.

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

The structure is 143 ft (43.6 m) long with a longest span of 138 ft (42.1 m) and a deck 66 ft wide.

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

It is owned by the State Highway Agency.