US Bridges

T429 (old Mill Rd) over W. Br. Wallenpaupack Cr.

PoorPosted for load

Lackawanna County, Pennsylvania · 150 Northeast of Pa 348 · Structure no. 000000000020871

Built
1930
95 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

T429 (old Mill Rd) over W. Br. Wallenpaupack Cr. is a steel stringer/multi-beam or girder carrying T429 (old Mill Rd) over W. Br. Wallenpaupack Cr. in Lackawanna County, Pennsylvania. It was built in 1930, so it is 95 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 2 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 50 vehicles a day, projected to reach 88 by 2038. The structure is 35 ft (10.7 m) long and 19 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesT429 (old Mill Rd)
CrossesW. Br. Wallenpaupack Cr.
Location150 Northeast of Pa 348
RouteCity Street 0
CountyLackawanna County
StatePennsylvania
Coordinates41.41226, -75.45976
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; extensive scour has occurred
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating5 US tons
Inventory rating3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span31 ft (9.4 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic88 by 2038
Trucks—
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$54,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T429 (old Mill Rd) over W. Br. Wallenpaupack Cr. built?

It was built in 1930, making it 95 years old in 2025.

What condition is T429 (old Mill Rd) over W. Br. Wallenpaupack Cr. 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 April 2024.

How much traffic does T429 (old Mill Rd) over W. Br. Wallenpaupack Cr. carry?

About 50 vehicles per day (2020 count).

How long is T429 (old Mill Rd) over W. Br. Wallenpaupack Cr.?

The structure is 35 ft (10.7 m) long with a longest span of 31 ft (9.4 m) and a deck 19 ft wide.

Who owns T429 (old Mill Rd) over W. Br. Wallenpaupack Cr.?

It is owned by the County Highway Agency.