US Bridges

Maclay St. /Turnbk over Norfolk Southern RR

Poor

Dauphin County, Pennsylvania · Maclay ST in Harrisburg · Structure no. 000000000014558

Built
1940
85 years old
Condition
Poor
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
483 ft
7 main spans
Daily traffic
2,176
2024 count
Owner
Railroad
Railroad

About this bridge

Maclay St. /Turnbk over Norfolk Southern RR is a steel stringer/multi-beam or girder carrying Maclay St. /Turnbk over Norfolk Southern RR in Dauphin County, Pennsylvania. It was built in 1940, so it is 85 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 2,176 vehicles a day, roughly 10% of them trucks, projected to reach 30,071 by 2032. The structure is 483 ft (147.2 m) long and 64 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesMaclay St. /Turnbk
CrossesNorfolk Southern RR
LocationMaclay ST in Harrisburg
RouteState Highway 0
CountyDauphin County
StatePennsylvania
Coordinates40.2813, -76.8873
Functional classUrban Other Principal Arterial

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckClosed grating
Main spans7
Design loadH 20
Structure length483 ft (147.2 m)
Longest span73 ft (22.3 m)
Deck width64 ft (19.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,176 (2024)
Projected traffic30,071 by 2032
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Maclay St. /Turnbk over Norfolk Southern RR built?

It was built in 1940, making it 85 years old in 2025.

What condition is Maclay St. /Turnbk over Norfolk Southern RR 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 November 2022.

How much traffic does Maclay St. /Turnbk over Norfolk Southern RR carry?

About 2,176 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Maclay St. /Turnbk over Norfolk Southern RR?

The structure is 483 ft (147.2 m) long with a longest span of 73 ft (22.3 m) and a deck 64 ft wide.

Who owns Maclay St. /Turnbk over Norfolk Southern RR?

It is owned by the Railroad.