US Bridges

SR 257 over Ped Underpass at Zoo

Poor

Delaware County, Ohio · 0.18 MI S of SR750 · Structure no. 2102943

Built
1970
55 years old
Condition
Poor
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
11,179
2015 count
Owner
State
State Highway Agency

About this bridge

SR 257 over Ped Underpass at Zoo is a prestressed concrete box beam or girders - multiple carrying SR 257 over Ped Underpass at Zoo in Delaware County, Ohio. It was built in 1970, so it is 55 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 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.

It carries about 11,179 vehicles a day, roughly 4% of them trucks, projected to reach 15,516 by 2035. The structure is 28 ft (8.5 m) long and 104 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 257
CrossesPed Underpass at Zoo
Location0.18 MI S of SR750
RouteState Highway 257
CountyDelaware County
StateOhio
Coordinates40.15684, -83.12094
Functional classUrban Minor Arterial

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating13.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width104 ft (31.8 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,179 (2015)
Projected traffic15,516 by 2035
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesPedestrian / bicycle
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 257 over Ped Underpass at Zoo built?

It was built in 1970, making it 55 years old in 2025.

What condition is SR 257 over Ped Underpass at Zoo 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 October 2024.

How much traffic does SR 257 over Ped Underpass at Zoo carry?

About 11,179 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is SR 257 over Ped Underpass at Zoo?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 104 ft wide.

Who owns SR 257 over Ped Underpass at Zoo?

It is owned by the State Highway Agency.