US Bridges

SR 26-PA 26 over Thompson Run

Fair

Centre County, Pennsylvania · Lemont · Structure no. 000000000009201

Built
1959
66 years old, rebuilt 2020
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
18,741
2024 count
Owner
State
State Highway Agency

About this bridge

SR 26-PA 26 over Thompson Run is a prestressed concrete box beam or girders - multiple carrying SR 26-PA 26 over Thompson Run in Centre County, Pennsylvania. It was built in 1959 and reconstructed in 2020, so it is 66 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 18,741 vehicles a day, roughly 3% of them trucks, projected to reach 26,625 by 2043. The structure is 29 ft (8.8 m) long and 103 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesSR 26-PA 26
CrossesThompson Run
LocationLemont
RouteState Highway 26
CountyCentre County
StatePennsylvania
Coordinates40.80816, -77.83563
Functional classUrban Other Principal Arterial

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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating93 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width103 ft (31.5 m)
Roadway width99 ft (30.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,741 (2024)
Projected traffic26,625 by 2043
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemYes

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$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 26-PA 26 over Thompson Run built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2020.

What condition is SR 26-PA 26 over Thompson Run 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 July 2023.

How much traffic does SR 26-PA 26 over Thompson Run carry?

About 18,741 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is SR 26-PA 26 over Thompson Run?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 103 ft wide.

Who owns SR 26-PA 26 over Thompson Run?

It is owned by the State Highway Agency.