US Bridges

Sycamore Street over AMTRAK & Nsrc

Fair

Dauphin County, Pennsylvania · City of Harrisbrg/Amtrak · Structure no. 000000000014745

Built
1977
48 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
274 ft
4 main spans
Daily traffic
4,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sycamore Street over AMTRAK & Nsrc is a steel continuous stringer/multi-beam or girder carrying Sycamore Street over AMTRAK & Nsrc in Dauphin County, Pennsylvania. It was built in 1977, so it is 48 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.

It carries about 4,000 vehicles a day, roughly 10% of them trucks, projected to reach 840 by 2043. The structure is 274 ft (83.5 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSycamore Street
CrossesAMTRAK & Nsrc
LocationCity of Harrisbrg/Amtrak
RouteCity Street 0
CountyDauphin County
StatePennsylvania
Coordinates40.24938, -76.86872
Functional classUrban 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.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment7: Better than present minimum criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length274 ft (83.5 m)
Longest span94 ft (28.7 m)
Deck width39 ft (11.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2023)
Projected traffic840 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sycamore Street over AMTRAK & Nsrc built?

It was built in 1977, making it 48 years old in 2025.

What condition is Sycamore Street over AMTRAK & Nsrc 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 Sycamore Street over AMTRAK & Nsrc carry?

About 4,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sycamore Street over AMTRAK & Nsrc?

The structure is 274 ft (83.5 m) long with a longest span of 94 ft (28.7 m) and a deck 39 ft wide.

Who owns Sycamore Street over AMTRAK & Nsrc?

It is owned by the City or Municipal Highway Agency.