US Bridges

T-480 Old RTE 99 over Lamson Run

Poor

Erie County, Pennsylvania · 750 N of Stancliff RD · Structure no. 000000000016454

Built
1941
84 years old
Condition
Poor
inspected August 2023
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
561
2013 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-480 Old RTE 99 over Lamson Run is a concrete tee beam carrying T-480 Old RTE 99 over Lamson Run in Erie County, Pennsylvania. It was built in 1941, so it is 84 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 4 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.

It carries about 561 vehicles a day, roughly 4% of them trucks, projected to reach 609 by 2033. The structure is 28 ft (8.5 m) long and 31 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesT-480 Old RTE 99
CrossesLamson Run
Location750 N of Stancliff RD
RouteCity Street 0
Coordinates41.96183, -80.1421
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic561 (2013)
Projected traffic609 by 2033
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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-480 Old RTE 99 over Lamson Run built?

It was built in 1941, making it 84 years old in 2025.

What condition is T-480 Old RTE 99 over Lamson 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 August 2023.

How much traffic does T-480 Old RTE 99 over Lamson Run carry?

About 561 vehicles per day (2013 count), of which roughly 4% are trucks.

How long is T-480 Old RTE 99 over Lamson Run?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 31 ft wide.

Who owns T-480 Old RTE 99 over Lamson Run?

It is owned by the Town or Township Highway Agency.