US Bridges

Walnut ST over Jonestown Road Harrisbur

Poor

Dauphin County, Pennsylvania · Wlnt ST over Jonstn R/Hbg · Structure no. 000000000014741

Built
1914
111 years old
Condition
Poor
inspected September 2023
Type
Arch - Deck
Concrete
Length
26 ft
1 main span
Daily traffic
200
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Walnut ST over Jonestown Road Harrisbur is a concrete arch - deck carrying Walnut ST over Jonestown Road Harrisbur in Dauphin County, Pennsylvania. It was built in 1914, so it is 111 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 200 vehicles a day, roughly 1% of them trucks, projected to reach 420 by 2041. The structure is 26 ft (7.9 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWalnut ST
CrossesJonestown Road Harrisbur
LocationWlnt ST over Jonstn R/Hbg
RouteCity Street 0
CountyDauphin County
StatePennsylvania
Coordinates40.26683, -76.8737
Functional classUrban 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
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.
Last inspectionSeptember 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2021)
Projected traffic420 by 2041
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$65,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Walnut ST over Jonestown Road Harrisbur built?

It was built in 1914, making it 111 years old in 2025.

What condition is Walnut ST over Jonestown Road Harrisbur 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 September 2023.

How much traffic does Walnut ST over Jonestown Road Harrisbur carry?

About 200 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Walnut ST over Jonestown Road Harrisbur?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m) and a deck 20 ft wide.

Who owns Walnut ST over Jonestown Road Harrisbur?

It is owned by the City or Municipal Highway Agency.