US Bridges

SR 99-I 99 NB over SR 322WB SR 3007 & Ramps

Good

Centre County, Pennsylvania · State College · Structure no. 000000000041674

Built
2002
23 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,747 ft
6 main spans
Daily traffic
15,804
2024 count
Owner
State
State Highway Agency

About this bridge

SR 99-I 99 NB over SR 322WB SR 3007 & Ramps is a steel continuous stringer/multi-beam or girder carrying SR 99-I 99 NB over SR 322WB SR 3007 & Ramps in Centre County, Pennsylvania. It was built in 2002, so it is 23 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 15,804 vehicles a day, roughly 13% of them trucks, projected to reach 18,670 by 2042. The structure is 1,747 ft (532.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 99-I 99 NB
CrossesSR 322WB SR 3007 & Ramps
LocationState College
RouteInterstate 99
CountyCentre County
StatePennsylvania
Coordinates40.82562, -77.84669
Functional classUrban Principal Arterial - Interstate

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 inspectionJuly 2024
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 rating89 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length1,747 ft (532.5 m)
Longest span329 ft (100.3 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,804 (2024)
Projected traffic18,670 by 2042
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 99-I 99 NB over SR 322WB SR 3007 & Ramps built?

It was built in 2002, making it 23 years old in 2025.

What condition is SR 99-I 99 NB over SR 322WB SR 3007 & Ramps 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 July 2024.

How much traffic does SR 99-I 99 NB over SR 322WB SR 3007 & Ramps carry?

About 15,804 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is SR 99-I 99 NB over SR 322WB SR 3007 & Ramps?

The structure is 1,747 ft (532.5 m) long with a longest span of 329 ft (100.3 m) and a deck 47 ft wide.

Who owns SR 99-I 99 NB over SR 322WB SR 3007 & Ramps?

It is owned by the State Highway Agency.