US Bridges

SR 4018 over Indian Springs

Fair

Northumberland County, Pennsylvania · 1.5 MI South of Sunbury · Structure no. 000000000029296

Built
1911
114 years old, rebuilt 1992
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
3,150
2024 count
Owner
State
State Highway Agency

About this bridge

SR 4018 over Indian Springs is a concrete slab carrying SR 4018 over Indian Springs in Northumberland County, Pennsylvania. It was built in 1911 and reconstructed in 1992, so it is 114 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 6 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 3,150 vehicles a day, roughly 5% of them trucks, projected to reach 5,466 by 2032. The structure is 24 ft (7.3 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 4018
CrossesIndian Springs
Location1.5 MI South of Sunbury
RouteState Highway 0
CountyNorthumberland County
StatePennsylvania
Coordinates40.83095, -76.79867
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating70 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,150 (2024)
Projected traffic5,466 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$92,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 4018 over Indian Springs built?

It was built in 1911, making it 114 years old in 2025. It was reconstructed in 1992.

What condition is SR 4018 over Indian Springs 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 November 2023.

How much traffic does SR 4018 over Indian Springs carry?

About 3,150 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is SR 4018 over Indian Springs?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 29 ft wide.

Who owns SR 4018 over Indian Springs?

It is owned by the State Highway Agency.