US Bridges

ST Clair Street over Trib to Seven Mile Creek

PoorPosted for load

Preble County, Ohio · 600 W of Barron St. · Structure no. 6860176

Built
1900
125 years old, rebuilt 2016
Condition
Poor
inspected January 2025
Type
Truss - Thru
Steel
Length
108 ft
1 main span
Daily traffic
463
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

ST Clair Street over Trib to Seven Mile Creek is a steel truss - thru carrying ST Clair Street over Trib to Seven Mile Creek in Preble County, Ohio. It was built in 1900 and reconstructed in 2016, so it is 125 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. Its operating status is: posted for load restriction.

It carries about 463 vehicles a day, roughly 5% of them trucks, projected to reach 643 by 2034. The structure is 108 ft (32.9 m) long and 17 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesST Clair Street
CrossesTrib to Seven Mile Creek
Location600 W of Barron St.
RouteCity Street 155
StateOhio
Coordinates39.73995, -84.63857
Functional classUrban Local

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating7.2 US tons
Inventory rating3.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length108 ft (32.9 m)
Longest span103 ft (31.5 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deck11 ft (3.4 m)

Traffic and service

Average daily traffic463 (2014)
Projected traffic643 by 2034
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 ST Clair Street over Trib to Seven Mile Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 2016.

What condition is ST Clair Street over Trib to Seven Mile Creek 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 January 2025.

How much traffic does ST Clair Street over Trib to Seven Mile Creek carry?

About 463 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is ST Clair Street over Trib to Seven Mile Creek?

The structure is 108 ft (32.9 m) long with a longest span of 103 ft (31.5 m) and a deck 17 ft wide.

Who owns ST Clair Street over Trib to Seven Mile Creek?

It is owned by the City or Municipal Highway Agency.