US Bridges

SR 79 NB over Over Conneaut Swamp

Fair

Crawford County, Pennsylvania · Greenwood Township · Structure no. 000000000012985

Built
1969
56 years old, rebuilt 1971
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
3,600 ft
60 main spans
Daily traffic
8,943
2024 count
Owner
State
State Highway Agency

About this bridge

SR 79 NB over Over Conneaut Swamp is a prestressed concrete box beam or girders - multiple carrying SR 79 NB over Over Conneaut Swamp in Crawford County, Pennsylvania. It was built in 1969 and reconstructed in 1971, so it is 56 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 8,943 vehicles a day, roughly 22% of them trucks, projected to reach 9,924 by 2032. The structure is 3,600 ft (1,097.3 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR 79 NB
CrossesOver Conneaut Swamp
LocationGreenwood Township
RouteInterstate 79
CountyCrawford County
StatePennsylvania
Coordinates41.54186, -80.18361
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94 US tons
Inventory rating18 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans60
Design loadHS 20 + Mod
Structure length3,600 ft (1,097.3 m)
Longest span60 ft (18.3 m)
Deck width44 ft (13.4 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,943 (2024)
Projected traffic9,924 by 2032
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 79 NB over Over Conneaut Swamp built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1971.

What condition is SR 79 NB over Over Conneaut Swamp 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 2023.

How much traffic does SR 79 NB over Over Conneaut Swamp carry?

About 8,943 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is SR 79 NB over Over Conneaut Swamp?

The structure is 3,600 ft (1,097.3 m) long with a longest span of 60 ft (18.3 m) and a deck 44 ft wide.

Who owns SR 79 NB over Over Conneaut Swamp?

It is owned by the State Highway Agency.