US Bridges

County Road 70 over Lightwood Knot Creek

Good

Covington County, Alabama · County Road 70 · Structure no. 017240

Built
2001
24 years old
Condition
Good
inspected March 2024
Type
Channel Beam
Concrete
Length
170 ft
5 main spans
Daily traffic
870
2001 count
Owner
County
County Highway Agency

About this bridge

County Road 70 over Lightwood Knot Creek is a concrete channel beam carrying County Road 70 over Lightwood Knot Creek in Covington County, Alabama. It was built in 2001, so it is 24 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 870 vehicles a day, roughly 12% of them trucks, projected to reach 1,000 by 2030. The structure is 170 ft (51.8 m) long and 31 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesCounty Road 70
CrossesLightwood Knot Creek
LocationCounty Road 70
RouteCounty Highway 70
CountyCovington County
StateAlabama
Coordinates31.39673, -86.2429
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 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 rating81.2 US tons
Inventory rating48.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span34 ft (10.4 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic870 (2001)
Projected traffic1,000 by 2030
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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$1.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 70 over Lightwood Knot Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is County Road 70 over Lightwood Knot 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 County Road 70 over Lightwood Knot Creek carry?

About 870 vehicles per day (2001 count), of which roughly 12% are trucks.

How long is County Road 70 over Lightwood Knot Creek?

The structure is 170 ft (51.8 m) long with a longest span of 34 ft (10.4 m) and a deck 31 ft wide.

Who owns County Road 70 over Lightwood Knot Creek?

It is owned by the County Highway Agency.