US Bridges

SR 405 over Over Delaware Run

Good

Northumberland County, Pennsylvania · 1.7 Mi.N.Of Watsontown · Structure no. 000000000029108

Built
1985
40 years old
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
2,557
2023 count
Owner
State
State Highway Agency

About this bridge

SR 405 over Over Delaware Run is a prestressed concrete box beam or girders - multiple carrying SR 405 over Over Delaware Run in Northumberland County, Pennsylvania. It was built in 1985, so it is 40 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,557 vehicles a day, roughly 10% of them trucks, projected to reach 3,661 by 2032. The structure is 55 ft (16.8 m) long and 40 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

Open in Google Maps
CarriesSR 405
CrossesOver Delaware Run
Location1.7 Mi.N.Of Watsontown
RouteState Highway 405
CountyNorthumberland County
StatePennsylvania
Coordinates41.11417, -76.87927
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating60 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length55 ft (16.8 m)
Longest span53 ft (16.2 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,557 (2023)
Projected traffic3,661 by 2032
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 405 over Over Delaware Run built?

It was built in 1985, making it 40 years old in 2025.

What condition is SR 405 over Over Delaware Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does SR 405 over Over Delaware Run carry?

About 2,557 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR 405 over Over Delaware Run?

The structure is 55 ft (16.8 m) long with a longest span of 53 ft (16.2 m) and a deck 40 ft wide.

Who owns SR 405 over Over Delaware Run?

It is owned by the State Highway Agency.