US Bridges

Voskamp Drive over Little Deer Creek

Fair

Allegheny County, Pennsylvania · DL04 Lit Deer Crk No. 4 · Structure no. 000000000002318

Built
1910
115 years old, rebuilt 1970
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
41
2023 count
Owner
County
County Highway Agency

About this bridge

Voskamp Drive over Little Deer Creek is a prestressed concrete box beam or girders - multiple carrying Voskamp Drive over Little Deer Creek in Allegheny County, Pennsylvania. It was built in 1910 and reconstructed in 1970, so it is 115 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 5 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 41 vehicles a day, roughly 10% of them trucks, projected to reach 50 by 2043. The structure is 43 ft (13.1 m) long and 12 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesVoskamp Drive
CrossesLittle Deer Creek
LocationDL04 Lit Deer Crk No. 4
RouteCity Street 0
Coordinates40.5831, -79.82733
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating32 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width12 ft (3.7 m)
Roadway width10 ft (3.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2023)
Projected traffic50 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$91,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Voskamp Drive over Little Deer Creek built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1970.

What condition is Voskamp Drive over Little Deer Creek 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 October 2023.

How much traffic does Voskamp Drive over Little Deer Creek carry?

About 41 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Voskamp Drive over Little Deer Creek?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 12 ft wide.

Who owns Voskamp Drive over Little Deer Creek?

It is owned by the County Highway Agency.