US Bridges

Dunham Road over Granny Creek

Good

Knox County, Ohio · 0.5 MI North of SR229 · Structure no. 4236254

Built
2012
13 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
198
2015 count
Owner
County
County Highway Agency

About this bridge

Dunham Road over Granny Creek is a steel stringer/multi-beam or girder carrying Dunham Road over Granny Creek in Knox County, Ohio. It was built in 2012, so it is 13 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 198 vehicles a day, roughly 8% of them trucks, projected to reach 275 by 2035. The structure is 72 ft (21.9 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesDunham Road
CrossesGranny Creek
Location0.5 MI North of SR229
RouteCounty Highway 382
CountyKnox County
StateOhio
Coordinates40.41, -82.61
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.1 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length72 ft (21.9 m)
Longest span69 ft (21 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic198 (2015)
Projected traffic275 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 Dunham Road over Granny Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is Dunham Road over Granny 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 March 2023.

How much traffic does Dunham Road over Granny Creek carry?

About 198 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Dunham Road over Granny Creek?

The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21 m) and a deck 24 ft wide.

Who owns Dunham Road over Granny Creek?

It is owned by the County Highway Agency.