Structure 900397 · Butler County, OH

SR 4 over Great Miami River

Carries SR 4 over Great Miami River, Over Great Miami.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT618 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

618 ft end to end, longest span 86 ft: about 1.7 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built195670 years old
Length618.4 ft188.5 m
Daily traffic10,340counted 2015
Last inspectedJuly 2024every 12 months

Location

StateOhio
CountyButler
LocationOver Great Miami
CarriesSR 4
CrossesGreat Miami River
Coordinates39.53888, -84.38411

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length618.4 ft (188.5 m)
Max Span85.6 ft (26.1 m)
Deck Width60.4 ft (18.4 m)
Deck Area3468.4 sq m
Main Spans8
Year Built1956

Traffic

Avg Daily Traffic10,340 (2015)
Truck Traffic6%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number0900397

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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