US Bridges

I-81;SR0081;T-490 over Br. of Conococheague Cr.

Fair

Franklin County, Pennsylvania · 0.25 Ml. N. Route 30 · Structure no. 000000000017386

Built
1963
62 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
45,479
2024 count
Owner
State
State Highway Agency

About this bridge

I-81;SR0081;T-490 over Br. of Conococheague Cr. is a concrete culvert carrying I-81;SR0081;T-490 over Br. of Conococheague Cr. in Franklin County, Pennsylvania. It was built in 1963, so it is 62 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 6 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 45,479 vehicles a day, roughly 29% of them trucks, projected to reach 59,656 by 2032. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesI-81;SR0081;T-490
CrossesBr. of Conococheague Cr.
Location0.25 Ml. N. Route 30
RouteInterstate 81
CountyFranklin County
StatePennsylvania
Coordinates39.92991, -77.63443
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94 US tons
Inventory rating56 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,479 (2024)
Projected traffic59,656 by 2032
Trucks29%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I-81;SR0081;T-490 over Br. of Conococheague Cr. built?

It was built in 1963, making it 62 years old in 2025.

What condition is I-81;SR0081;T-490 over Br. of Conococheague Cr. 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 February 2024.

How much traffic does I-81;SR0081;T-490 over Br. of Conococheague Cr. carry?

About 45,479 vehicles per day (2024 count), of which roughly 29% are trucks.

How long is I-81;SR0081;T-490 over Br. of Conococheague Cr.?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).

Who owns I-81;SR0081;T-490 over Br. of Conococheague Cr.?

It is owned by the State Highway Agency.