US Bridges

C170 Frahm Pike over Twelvemile Creek

Good

Mercer County, Ohio · 0.7 Mi. E. of SR118 · Structure no. 5443571

Built
2006
19 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
470
2015 count
Owner
County
County Highway Agency

About this bridge

C170 Frahm Pike over Twelvemile Creek is a prestressed concrete box beam or girders - multiple carrying C170 Frahm Pike over Twelvemile Creek in Mercer County, Ohio. It was built in 2006, so it is 19 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 470 vehicles a day, roughly 8% of them trucks, projected to reach 652 by 2035. The structure is 63 ft (19.2 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesC170 Frahm Pike
CrossesTwelvemile Creek
Location0.7 Mi. E. of SR118
RouteCounty Highway C0170
StateOhio
Coordinates40.59515, -84.63464
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span57 ft (17.4 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic470 (2015)
Projected traffic652 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 C170 Frahm Pike over Twelvemile Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is C170 Frahm Pike over Twelvemile 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 C170 Frahm Pike over Twelvemile Creek carry?

About 470 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is C170 Frahm Pike over Twelvemile Creek?

The structure is 63 ft (19.2 m) long with a longest span of 57 ft (17.4 m) and a deck 36 ft wide.

Who owns C170 Frahm Pike over Twelvemile Creek?

It is owned by the County Highway Agency.