US Bridges

Diamond Mill Rd. over S49*S

Fair

Montgomery County, Ohio · .08MI.E.OF JCT.SB49&IR70 · Structure no. 5704448

Built
1960
65 years old, rebuilt 2004
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
132 ft
3 main spans
Daily traffic
2,166
2015 count
Owner
State
State Highway Agency

About this bridge

Diamond Mill Rd. over S49*S is a concrete continuous slab carrying Diamond Mill Rd. over S49*S in Montgomery County, Ohio. It was built in 1960 and reconstructed in 2004, so it is 65 years old, older than the Ohio average of 47.3 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 2,166 vehicles a day, roughly 5% of them trucks, projected to reach 4,915 by 2035. The structure is 132 ft (40.1 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesDiamond Mill Rd.
CrossesS49*S
Location.08MI.E.OF JCT.SB49&IR70
RouteCounty Highway 217
CountyMontgomery County
StateOhio
Coordinates39.8534, -84.36764
Functional classUrban Collector

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 inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length132 ft (40.1 m)
Longest span50 ft (15.2 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,166 (2015)
Projected traffic4,915 by 2035
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Diamond Mill Rd. over S49*S built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2004.

What condition is Diamond Mill Rd. over S49*S 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 October 2024.

How much traffic does Diamond Mill Rd. over S49*S carry?

About 2,166 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Diamond Mill Rd. over S49*S?

The structure is 132 ft (40.1 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.

Who owns Diamond Mill Rd. over S49*S?

It is owned by the State Highway Agency.