US Bridges

T-584 over Norris Brook

FairPosted for load

Tioga County, Pennsylvania · 0.2 Mi. E of Niles Valley · Structure no. 000000000033292

Built
1980
45 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
34 ft
1 main span
Daily traffic
200
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-584 over Norris Brook is a wood or timber stringer/multi-beam or girder carrying T-584 over Norris Brook in Tioga County, Pennsylvania. It was built in 1980, so it is 45 years old, younger 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. Its operating status is: posted for other load-capacity restriction.

It carries about 200 vehicles a day, roughly 30% of them trucks, projected to reach 309 by 2045. The structure is 34 ft (10.4 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT-584
CrossesNorris Brook
Location0.2 Mi. E of Niles Valley
RouteCity Street 0
Coordinates41.82508, -77.28591
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 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 statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating34 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width27 ft (8.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic309 by 2045
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T-584 over Norris Brook built?

It was built in 1980, making it 45 years old in 2025.

What condition is T-584 over Norris Brook 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 T-584 over Norris Brook carry?

About 200 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is T-584 over Norris Brook?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 27 ft wide.

Who owns T-584 over Norris Brook?

It is owned by the Town or Township Highway Agency.