US Bridges

CO RD 520 over Relief Ditch

Good

Leflore County, Mississippi · Sec 7 T19N R 2E B · Structure no. SA4200000000043

Built
2000
25 years old
Condition
Good
inspected January 2025
Type
Channel Beam
Concrete
Length
93 ft
3 main spans
Daily traffic
3,700
2015 count
Owner
County
County Highway Agency

About this bridge

CO RD 520 over Relief Ditch is a concrete channel beam carrying CO RD 520 over Relief Ditch in Leflore County, Mississippi. It was built in 2000, so it is 25 years old, younger than the Mississippi average of 38.9 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 3,700 vehicles a day, roughly 8% of them trucks, projected to reach 5,550 by 2035. The structure is 93 ft (28.2 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCO RD 520
CrossesRelief Ditch
LocationSec 7 T19N R 2E B
RouteCounty Highway 520
Coordinates33.52102, -90.12971
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating68.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length93 ft (28.2 m)
Longest span31 ft (9.4 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2015)
Projected traffic5,550 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD 520 over Relief Ditch built?

It was built in 2000, making it 25 years old in 2025.

What condition is CO RD 520 over Relief Ditch 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 January 2025.

How much traffic does CO RD 520 over Relief Ditch carry?

About 3,700 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is CO RD 520 over Relief Ditch?

The structure is 93 ft (28.2 m) long with a longest span of 31 ft (9.4 m) and a deck 45 ft wide.

Who owns CO RD 520 over Relief Ditch?

It is owned by the County Highway Agency.