US Bridges

Unger over Little Blackjack Branch

Good

Hocking County, Ohio · 3.35 MI N of SR 664 · Structure no. 3732371

Built
1999
26 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
32
2015 count
Owner
County
County Highway Agency

About this bridge

Unger over Little Blackjack Branch is a prestressed concrete box beam or girders - multiple carrying Unger over Little Blackjack Branch in Hocking 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 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 32 vehicles a day, roughly 3% of them trucks, projected to reach 44 by 2035. The structure is 45 ft (13.7 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUnger
CrossesLittle Blackjack Branch
Location3.35 MI N of SR 664
RouteCounty Highway T059A
StateOhio
Coordinates39.46487, -82.52069
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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating38.9 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width21 ft (6.4 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2015)
Projected traffic44 by 2035
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Unger over Little Blackjack Branch built?

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

What condition is Unger over Little Blackjack Branch 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 August 2024.

How much traffic does Unger over Little Blackjack Branch carry?

About 32 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Unger over Little Blackjack Branch?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 21 ft wide.

Who owns Unger over Little Blackjack Branch?

It is owned by the County Highway Agency.