US Bridges

Griffin Road over Canal

Fair

Washington County, Mississippi · Sec 12 T18N R 7W · Structure no. SA7600000000229

Built
1980
45 years old, rebuilt 2016
Condition
Fair
inspected October 2023
Type
Channel Beam
Concrete
Length
50 ft
2 main spans
Daily traffic
40
2021 count
Owner
County
County Highway Agency

About this bridge

Griffin Road over Canal is a concrete channel beam carrying Griffin Road over Canal in Washington County, Mississippi. It was built in 1980 and reconstructed in 2016, so it is 45 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 40 vehicles a day, roughly 8% of them trucks, projected to reach 56 by 2041. The structure is 50 ft (15.2 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGriffin Road
CrossesCanal
LocationSec 12 T18N R 7W
RouteCounty Highway 820
Coordinates33.42374, -90.87478
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.7 US tons
Inventory rating32.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length50 ft (15.2 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2021)
Projected traffic56 by 2041
Trucks8%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$517,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Griffin Road over Canal built?

It was built in 1980, making it 45 years old in 2025. It was reconstructed in 2016.

What condition is Griffin Road over Canal 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 Griffin Road over Canal carry?

About 40 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Griffin Road over Canal?

The structure is 50 ft (15.2 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns Griffin Road over Canal?

It is owned by the County Highway Agency.