US Bridges

Dobbs RD over Thorntol Creek

Good

Tuscaloosa County, Alabama · 5 MI W of Jet. Co. Rd. 35 · Structure no. 020773

Built
2016
9 years old
Condition
Good
inspected March 2024
Type
Channel Beam
Concrete
Length
68 ft
2 main spans
Daily traffic
450
2016 count
Owner
County
County Highway Agency

About this bridge

Dobbs RD over Thorntol Creek is a concrete channel beam carrying Dobbs RD over Thorntol Creek in Tuscaloosa County, Alabama. It was built in 2016, so it is 9 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 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 450 vehicles a day, roughly 10% of them trucks, projected to reach 500 by 2026. The structure is 68 ft (20.7 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesDobbs RD
CrossesThorntol Creek
Location5 MI W of Jet. Co. Rd. 35
RouteCounty Highway 160
StateAlabama
Coordinates33.44312, -87.73023
Functional classRural Minor 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.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.1 US tons
Inventory rating49.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span34 ft (10.4 m)
Deck width31 ft (9.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2016)
Projected traffic500 by 2026
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a toll 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$642,000 (2025 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Dobbs RD over Thorntol Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Dobbs RD over Thorntol 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 2024.

How much traffic does Dobbs RD over Thorntol Creek carry?

About 450 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Dobbs RD over Thorntol Creek?

The structure is 68 ft (20.7 m) long with a longest span of 34 ft (10.4 m) and a deck 31 ft wide.

Who owns Dobbs RD over Thorntol Creek?

It is owned by the County Highway Agency.