US Bridges

Mill Street over Del-Lack Rr/Roaring Brk

PoorPosted for load

Lackawanna County, Pennsylvania · 3/4 MI SE of SR 6011 · Structure no. 000000000020928

Built
1917
108 years old
Condition
Poor
inspected March 2024
Type
Arch - Deck
Concrete
Length
400 ft
7 main spans
Daily traffic
2,000
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mill Street over Del-Lack Rr/Roaring Brk is a concrete arch - deck carrying Mill Street over Del-Lack Rr/Roaring Brk in Lackawanna County, Pennsylvania. It was built in 1917, so it is 108 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 3 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. Its operating status is: posted for load restriction.

It carries about 2,000 vehicles a day, roughly 1% of them trucks, projected to reach 2,680 by 2025. The structure is 400 ft (121.9 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMill Street
CrossesDel-Lack Rr/Roaring Brk
Location3/4 MI SE of SR 6011
RouteCity Street 0
Coordinates41.4078, -75.6264
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating8 US tons
Inventory rating4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 20
Structure length400 ft (121.9 m)
Longest span128 ft (39 m)
Deck width26 ft (7.8 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deck45 ft (13.7 m)

Traffic and service

Average daily traffic2,000 (2015)
Projected traffic2,680 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
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$1.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill Street over Del-Lack Rr/Roaring Brk built?

It was built in 1917, making it 108 years old in 2025.

What condition is Mill Street over Del-Lack Rr/Roaring Brk 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 March 2024.

How much traffic does Mill Street over Del-Lack Rr/Roaring Brk carry?

About 2,000 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Mill Street over Del-Lack Rr/Roaring Brk?

The structure is 400 ft (121.9 m) long with a longest span of 128 ft (39 m) and a deck 26 ft wide.

Who owns Mill Street over Del-Lack Rr/Roaring Brk?

It is owned by the City or Municipal Highway Agency.