US Bridges

T-308 Portable RD over Sterling Run

PoorPosted for load

Cameron County, Pennsylvania · 3.5 Miles SW of Cameron · Structure no. 000000000008956

Built
1930
95 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
20
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-308 Portable RD over Sterling Run is a steel stringer/multi-beam or girder carrying T-308 Portable RD over Sterling Run in Cameron County, Pennsylvania. It was built in 1930, so it is 95 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, projected to reach 25 by 2040. The structure is 38 ft (11.6 m) long and 12 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesT-308 Portable RD
CrossesSterling Run
Location3.5 Miles SW of Cameron
RouteCity Street 0
Coordinates41.42411, -78.22787
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating18 US tons
Inventory rating13 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span36 ft (11 m)
Deck width12 ft (3.8 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic25 by 2040
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$692,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-308 Portable RD over Sterling Run built?

It was built in 1930, making it 95 years old in 2025.

What condition is T-308 Portable RD over Sterling Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does T-308 Portable RD over Sterling Run carry?

About 20 vehicles per day (2020 count).

How long is T-308 Portable RD over Sterling Run?

The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 12 ft wide.

Who owns T-308 Portable RD over Sterling Run?

It is owned by the Town or Township Highway Agency.