US Bridges

Darby Road over Ithan Creek

Fair

Delaware County, Pennsylvania · East of PA-320 25J04 · Structure no. 000000000015223

Built
1932
93 years old
Condition
Fair
inspected August 2024
Type
Arch - Deck
Concrete
Length
40 ft
1 main span
Daily traffic
7,835
2024 count
Owner
State
State Highway Agency

About this bridge

Darby Road over Ithan Creek is a concrete arch - deck carrying Darby Road over Ithan Creek in Delaware County, Pennsylvania. It was built in 1932, so it is 93 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 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 7,835 vehicles a day, roughly 2% of them trucks, projected to reach 9,497 by 2032. The structure is 40 ft (12.2 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesDarby Road
CrossesIthan Creek
LocationEast of PA-320 25J04
RouteState Highway 0
CountyDelaware County
StatePennsylvania
Coordinates39.99843, -75.35043
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating28 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,835 (2024)
Projected traffic9,497 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$99,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Darby Road over Ithan Creek built?

It was built in 1932, making it 93 years old in 2025.

What condition is Darby Road over Ithan Creek 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 August 2024.

How much traffic does Darby Road over Ithan Creek carry?

About 7,835 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Darby Road over Ithan Creek?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns Darby Road over Ithan Creek?

It is owned by the State Highway Agency.