US Bridges

Turbot Avenue over Limestone Run

Fair

Northumberland County, Pennsylvania · Milton Boro · Structure no. 000000000029412

Built
1991
34 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
4,350
2009 count
Owner
County
County Highway Agency

About this bridge

Turbot Avenue over Limestone Run is a prestressed concrete box beam or girders - multiple carrying Turbot Avenue over Limestone Run in Northumberland County, Pennsylvania. It was built in 1991, so it is 34 years old, younger 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 4,350 vehicles a day, roughly 13% of them trucks, projected to reach 6,725 by 2031. The structure is 39 ft (11.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesTurbot Avenue
CrossesLimestone Run
LocationMilton Boro
RouteCity Street 0
CountyNorthumberland County
StatePennsylvania
Coordinates41.01649, -76.84792
Functional classUrban Local

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span38 ft (11.6 m)
Deck width43 ft (13.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,350 (2009)
Projected traffic6,725 by 2031
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$444,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Turbot Avenue over Limestone Run built?

It was built in 1991, making it 34 years old in 2025.

What condition is Turbot Avenue over Limestone Run 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 September 2023.

How much traffic does Turbot Avenue over Limestone Run carry?

About 4,350 vehicles per day (2009 count), of which roughly 13% are trucks.

How long is Turbot Avenue over Limestone Run?

The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.6 m) and a deck 43 ft wide.

Who owns Turbot Avenue over Limestone Run?

It is owned by the County Highway Agency.