US Bridges

Earl Knight RD over Little Copiah Creek

Fair

Copiah County, Mississippi · Sec 8 T 1N R 1W · Structure no. SA1500000000004

Built
2005
20 years old
Condition
Fair
inspected May 2023
Type
Channel Beam
Concrete
Length
76 ft
4 main spans
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

Earl Knight RD over Little Copiah Creek is a concrete channel beam carrying Earl Knight RD over Little Copiah Creek in Copiah County, Mississippi. It was built in 2005, so it is 20 years old, younger 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 100 vehicles a day, projected to reach 200 by 2045. The structure is 76 ft (23.2 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesEarl Knight RD
CrossesLittle Copiah Creek
LocationSec 8 T 1N R 1W
RouteCounty Highway 70
Coordinates31.94264, -90.32783
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating38.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadH 15
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic200 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$228,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Earl Knight RD over Little Copiah Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Earl Knight RD over Little Copiah 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 May 2023.

How much traffic does Earl Knight RD over Little Copiah Creek carry?

About 100 vehicles per day (2015 count).

How long is Earl Knight RD over Little Copiah Creek?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Earl Knight RD over Little Copiah Creek?

It is owned by the County Highway Agency.