US Bridges

SR 7 over Riverdale Crk Grenada RR

Good

Grenada County, Mississippi · 1.6 MI N US 51 · Structure no. 310000702207620

Built
2023
2 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
580 ft
3 main spans
Daily traffic
3,900
2023 count
Owner
State
State Highway Agency

About this bridge

SR 7 over Riverdale Crk Grenada RR is a prestressed concrete stringer/multi-beam or girder carrying SR 7 over Riverdale Crk Grenada RR in Grenada County, Mississippi. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,900 vehicles a day, roughly 12% of them trucks, projected to reach 5,200 by 2043. The structure is 580 ft (176.8 m) long and 47 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesSR 7
CrossesRiverdale Crk Grenada RR
Location1.6 MI N US 51
RouteState Highway 7
CountyGrenada County
StateMississippi
Coordinates33.87226, -89.82802
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHL 93
Structure length580 ft (176.8 m)
Longest span140 ft (42.7 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2023)
Projected traffic5,200 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 7 over Riverdale Crk Grenada RR built?

It was built in 2023, making it 2 years old in 2025.

What condition is SR 7 over Riverdale Crk Grenada RR 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 May 2023.

How much traffic does SR 7 over Riverdale Crk Grenada RR carry?

About 3,900 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is SR 7 over Riverdale Crk Grenada RR?

The structure is 580 ft (176.8 m) long with a longest span of 140 ft (42.7 m) and a deck 47 ft wide.

Who owns SR 7 over Riverdale Crk Grenada RR?

It is owned by the State Highway Agency.