US Bridges

SR 99-I 99 over Prison Road D

Good

Centre County, Pennsylvania · 1 MI S SR 150 Interchange · Structure no. 000000000041663

Built
2001
24 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
124 ft
1 main span
Daily traffic
12,128
2023 count
Owner
State
State Highway Agency

About this bridge

SR 99-I 99 over Prison Road D is a prestressed concrete stringer/multi-beam or girder carrying SR 99-I 99 over Prison Road D in Centre County, Pennsylvania. It was built in 2001, so it is 24 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 12,128 vehicles a day, roughly 15% of them trucks, projected to reach 17,236 by 2043. The structure is 124 ft (37.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR 99-I 99
CrossesPrison Road D
Location1 MI S SR 150 Interchange
RouteInterstate 99
Coordinates40.86643, -77.78479
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating57 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length124 ft (37.8 m)
Longest span119 ft (36.3 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,128 (2023)
Projected traffic17,236 by 2043
Trucks15%
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 over Prison Road D built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR 99-I 99 over Prison Road D 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 April 2023.

How much traffic does SR 99-I 99 over Prison Road D carry?

About 12,128 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SR 99-I 99 over Prison Road D?

The structure is 124 ft (37.8 m) long with a longest span of 119 ft (36.3 m) and a deck 43 ft wide.

Who owns SR 99-I 99 over Prison Road D?

It is owned by the State Highway Agency.