US Bridges

T-665 over Blockhouse Creek

Fair

Lycoming County, Pennsylvania · 2.6 Mi. N. of Buttonwood · Structure no. 000000000025075

Built
1935
90 years old, rebuilt 1969
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
64 ft
2 main spans
Daily traffic
50
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-665 over Blockhouse Creek is a steel stringer/multi-beam or girder carrying T-665 over Blockhouse Creek in Lycoming County, Pennsylvania. It was built in 1935 and reconstructed in 1969, so it is 90 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 50 vehicles a day, projected to reach 77 by 2045. The structure is 64 ft (19.5 m) long and 16 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesT-665
CrossesBlockhouse Creek
Location2.6 Mi. N. of Buttonwood
RouteCounty Highway 0
CountyLycoming County
StatePennsylvania
Coordinates41.5343, -77.12397
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans2
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span29 ft (8.8 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic77 by 2045
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$119,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-665 over Blockhouse Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1969.

What condition is T-665 over Blockhouse Creek 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 September 2023.

How much traffic does T-665 over Blockhouse Creek carry?

About 50 vehicles per day (2023 count).

How long is T-665 over Blockhouse Creek?

The structure is 64 ft (19.5 m) long with a longest span of 29 ft (8.8 m) and a deck 16 ft wide.

Who owns T-665 over Blockhouse Creek?

It is owned by the Town or Township Highway Agency.