US Bridges

Babcock Bl over North Park Lake Spillway

Fair

Allegheny County, Pennsylvania · @ N.Park Lake Spillway · Structure no. 000000000001971

Built
1936
89 years old
Condition
Fair
inspected June 2022
Type
Frame
Concrete
Length
39 ft
1 main span
Daily traffic
3,763
2024 count
Owner
State
State Highway Agency

About this bridge

Babcock Bl over North Park Lake Spillway is a concrete frame carrying Babcock Bl over North Park Lake Spillway in Allegheny County, Pennsylvania. It was built in 1936, so it is 89 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 3,763 vehicles a day, roughly 3% of them trucks, projected to reach 3,472 by 2032. The structure is 39 ft (11.9 m) long and 64 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesBabcock Bl
CrossesNorth Park Lake Spillway
Location@ N.Park Lake Spillway
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.59691, -79.99695
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span39 ft (11.9 m)
Deck width64 ft (19.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,763 (2024)
Projected traffic3,472 by 2032
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$110,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Babcock Bl over North Park Lake Spillway built?

It was built in 1936, making it 89 years old in 2025.

What condition is Babcock Bl over North Park Lake Spillway 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 June 2022.

How much traffic does Babcock Bl over North Park Lake Spillway carry?

About 3,763 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Babcock Bl over North Park Lake Spillway?

The structure is 39 ft (11.9 m) long with a longest span of 39 ft (11.9 m) and a deck 64 ft wide.

Who owns Babcock Bl over North Park Lake Spillway?

It is owned by the State Highway Agency.