US Bridges

Knights Bridge R over Wilson Creek

Good

Lauderdale County, Alabama · 800 F S Int Mars Hill RD · Structure no. 011886

Built
1977
48 years old
Condition
Good
inspected March 2024
Type
Culvert
Steel
Length
45 ft
2 main spans
Daily traffic
975
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Knights Bridge R over Wilson Creek is a steel culvert carrying Knights Bridge R over Wilson Creek in Lauderdale County, Alabama. It was built in 1977, so it is 48 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 975 vehicles a day, roughly 6% of them trucks, projected to reach 1,650 by 2034. The structure is 45 ft (13.7 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesKnights Bridge R
CrossesWilson Creek
Location800 F S Int Mars Hill RD
RouteCity Street 0
StateAlabama
Coordinates34.85531, -87.64481
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.3 US tons
Inventory rating47 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 15
Structure length45 ft (13.7 m)
Longest span14 ft (4.3 m)
Deck width39 ft (11.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic975 (2014)
Projected traffic1,650 by 2034
Trucks6%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$804,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Knights Bridge R over Wilson Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Knights Bridge R over Wilson 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 Knights Bridge R over Wilson Creek carry?

About 975 vehicles per day (2014 count), of which roughly 6% are trucks.

How long is Knights Bridge R over Wilson Creek?

The structure is 45 ft (13.7 m) long with a longest span of 14 ft (4.3 m) and a deck 39 ft wide.

Who owns Knights Bridge R over Wilson Creek?

It is owned by the City or Municipal Highway Agency.