US Bridges

T-959 over Pa Tpk (I-76)

Fair

Lancaster County, Pennsylvania · East Cocalico Twp · Structure no. 000000000021798

Built
1949
76 years old, rebuilt 2018
Condition
Fair
inspected April 2023
Type
Girder and Floorbeam System
Steel
Length
96 ft
1 main span
Daily traffic
200
1992 count
Owner
Toll Authority
State Toll Authority

About this bridge

T-959 over Pa Tpk (I-76) is a steel girder and floorbeam system carrying T-959 over Pa Tpk (I-76) in Lancaster County, Pennsylvania. It was built in 1949 and reconstructed in 2018, so it is 76 years old, older 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 5 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 200 vehicles a day, roughly 8% of them trucks, projected to reach 315 by 2030. The structure is 96 ft (29.3 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesT-959
CrossesPa Tpk (I-76)
LocationEast Cocalico Twp
RouteCity Street 959
CountyLancaster County
StatePennsylvania
Coordinates40.21066, -76.04533
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span94 ft (28.7 m)
Deck width27 ft (8.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (1992)
Projected traffic315 by 2030
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$192,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was T-959 over Pa Tpk (I-76) built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2018.

What condition is T-959 over Pa Tpk (I-76) 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 April 2023.

How much traffic does T-959 over Pa Tpk (I-76) carry?

About 200 vehicles per day (1992 count), of which roughly 8% are trucks.

How long is T-959 over Pa Tpk (I-76)?

The structure is 96 ft (29.3 m) long with a longest span of 94 ft (28.7 m) and a deck 27 ft wide.

Who owns T-959 over Pa Tpk (I-76)?

It is owned by the State Toll Authority.