US Bridges

Knox Road over Creek

Fair

Lauderdale County, Mississippi · Sec 23 T 7N R17E B · Structure no. SA3800000000210

Built
1926
99 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
300
2021 count
Owner
County
County Highway Agency

About this bridge

Knox Road over Creek is a concrete culvert carrying Knox Road over Creek in Lauderdale County, Mississippi. It was built in 1926, so it is 99 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 300 vehicles a day, roughly 8% of them trucks, projected to reach 400 by 2043. The structure is 21 ft (6.4 m) long and 27 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesKnox Road
CrossesCreek
LocationSec 23 T 7N R17E B
RouteCounty Highway 170
CountyLauderdale County
StateMississippi
Coordinates32.4329, -88.52199
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 10
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2021)
Projected traffic400 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$550,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Knox Road over Creek built?

It was built in 1926, making it 99 years old in 2025.

What condition is Knox Road over Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does Knox Road over Creek carry?

About 300 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Knox Road over Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 27 ft wide.

Who owns Knox Road over Creek?

It is owned by the County Highway Agency.