US Bridges

Knight RD over Trib to Copiah Creek

Fair

Copiah County, Mississippi · Sec 15 T10N R10E · Structure no. SA150000000A184

Built
2017
8 years old
Condition
Fair
inspected June 2024
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
60
2017 count
Owner
County
County Highway Agency

About this bridge

Knight RD over Trib to Copiah Creek is a concrete channel beam carrying Knight RD over Trib to Copiah Creek in Copiah County, Mississippi. It was built in 2017, so it is 8 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 5 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 60 vehicles a day, projected to reach 115 by 2042. The structure is 57 ft (17.4 m) long and 25 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesKnight RD
CrossesTrib to Copiah Creek
LocationSec 15 T10N R10E
RouteCounty Highway 24
CountyCopiah County
StateMississippi
Coordinates31.84222, -90.18317
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.4 US tons
Inventory rating37.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2017)
Projected traffic115 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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$171,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Knight RD over Trib to Copiah Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Knight RD over Trib to 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 June 2024.

How much traffic does Knight RD over Trib to Copiah Creek carry?

About 60 vehicles per day (2017 count).

How long is Knight RD over Trib to Copiah Creek?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.

Who owns Knight RD over Trib to Copiah Creek?

It is owned by the County Highway Agency.