US Bridges

Key Turney Road over Thompson Branch

Good

Morgan County, Alabama · 0.5 MI E of Nat Key Road · Structure no. 021091

Built
2015
10 years old
Condition
Good
inspected February 2025
Type
Culvert
Concrete
Length
24 ft
4 main spans
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

Key Turney Road over Thompson Branch is a concrete culvert carrying Key Turney Road over Thompson Branch in Morgan County, Alabama. It was built in 2015, so it is 10 years old, younger than the Alabama average of 51.1 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 174 by 2044. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesKey Turney Road
CrossesThompson Branch
Location0.5 MI E of Nat Key Road
RouteCounty Highway 1166
StateAlabama
Coordinates34.36923, -86.8195
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span0 ft (0.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic174 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$420,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Key Turney Road over Thompson Branch built?

It was built in 2015, making it 10 years old in 2025.

What condition is Key Turney Road over Thompson 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 February 2025.

How much traffic does Key Turney Road over Thompson Branch carry?

About 100 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Key Turney Road over Thompson Branch?

The structure is 24 ft (7.3 m) long with a longest span of 0 ft (0.1 m).

Who owns Key Turney Road over Thompson Branch?

It is owned by the County Highway Agency.