US Bridges

SR 531 over Mill Creek

Good

Mahoning County, Ohio · 1.50 MI N of SR 14 · Structure no. 5005671

Built
1947
78 years old
Condition
Good
inspected February 2025
Type
Slab
Concrete Continuous
Length
86 ft
3 main spans
Daily traffic
2,826
2015 count
Owner
State
State Highway Agency

About this bridge

SR 531 over Mill Creek is a concrete continuous slab carrying SR 531 over Mill Creek in Mahoning County, Ohio. It was built in 1947, so it is 78 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,826 vehicles a day, roughly 8% of them trucks, projected to reach 3,922 by 2035. The structure is 86 ft (26.2 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 531
CrossesMill Creek
Location1.50 MI N of SR 14
RouteState Highway 534
CountyMahoning County
StateOhio
Coordinates40.97212, -80.95448
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length86 ft (26.2 m)
Longest span30 ft (9.1 m)
Deck width36 ft (11.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,826 (2015)
Projected traffic3,922 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 531 over Mill Creek built?

It was built in 1947, making it 78 years old in 2025.

What condition is SR 531 over Mill Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.

How much traffic does SR 531 over Mill Creek carry?

About 2,826 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is SR 531 over Mill Creek?

The structure is 86 ft (26.2 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns SR 531 over Mill Creek?

It is owned by the State Highway Agency.