US Bridges

SR 129 over Mill Creek

Good

Butler County, Ohio · .12 MI E Lib-Fairfield RD · Structure no. 0903442

Built
1999
26 years old
Condition
Good
inspected November 2024
Type
Culvert
Steel
Length
49 ft
1 main span
Daily traffic
36,477
2015 count
Owner
State
State Highway Agency

About this bridge

SR 129 over Mill Creek is a steel culvert carrying SR 129 over Mill Creek in Butler County, Ohio. It was built in 1999, so it is 26 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 36,477 vehicles a day, roughly 11% of them trucks, projected to reach 50,630 by 2035. The structure is 49 ft (14.8 m) long.

CarriesSR 129
CrossesMill Creek
Location.12 MI E Lib-Fairfield RD
RouteState Highway 129
StateOhio
Coordinates39.3825, -84.47612
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length49 ft (14.8 m)
Longest span49 ft (14.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,477 (2015)
Projected traffic50,630 by 2035
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 129 over Mill Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR 129 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 November 2024.

How much traffic does SR 129 over Mill Creek carry?

About 36,477 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is SR 129 over Mill Creek?

The structure is 49 ft (14.8 m) long with a longest span of 49 ft (14.8 m).

Who owns SR 129 over Mill Creek?

It is owned by the State Highway Agency.