US Bridges

SR 4012 Zimmerly R over Over SR 79 Nb/Sb

Fair

Erie County, Pennsylvania · Mill Creek Township · Structure no. 000000000016375

Built
1965
60 years old, rebuilt 1988
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
243 ft
5 main spans
Daily traffic
13,607
2023 count
Owner
State
State Highway Agency

About this bridge

SR 4012 Zimmerly R over Over SR 79 Nb/Sb is a prestressed concrete box beam or girders - multiple carrying SR 4012 Zimmerly R over Over SR 79 Nb/Sb in Erie County, Pennsylvania. It was built in 1965 and reconstructed in 1988, so it is 60 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 13,607 vehicles a day, roughly 6% of them trucks, projected to reach 24,286 by 2032. The structure is 243 ft (74.1 m) long and 66 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 4012 Zimmerly R
CrossesOver SR 79 Nb/Sb
LocationMill Creek Township
RouteState Highway 0
CountyErie County
StatePennsylvania
Coordinates42.06588, -80.10593
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating39 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length243 ft (74.1 m)
Longest span58 ft (17.7 m)
Deck width66 ft (20 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,607 (2023)
Projected traffic24,286 by 2032
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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$632,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 4012 Zimmerly R over Over SR 79 Nb/Sb built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1988.

What condition is SR 4012 Zimmerly R over Over SR 79 Nb/Sb 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 September 2023.

How much traffic does SR 4012 Zimmerly R over Over SR 79 Nb/Sb carry?

About 13,607 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR 4012 Zimmerly R over Over SR 79 Nb/Sb?

The structure is 243 ft (74.1 m) long with a longest span of 58 ft (17.7 m) and a deck 66 ft wide.

Who owns SR 4012 Zimmerly R over Over SR 79 Nb/Sb?

It is owned by the State Highway Agency.