US Bridges

Green Lake Road over Swiftwater Bayou

Fair

Washington County, Mississippi · Sec 32 T17N R 7W · Structure no. SA7600000000185

Built
1986
39 years old, rebuilt 2009
Condition
Fair
inspected October 2023
Type
Channel Beam
Concrete
Length
76 ft
4 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Green Lake Road over Swiftwater Bayou is a concrete channel beam carrying Green Lake Road over Swiftwater Bayou in Washington County, Mississippi. It was built in 1986 and reconstructed in 2009, so it is 39 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 50 vehicles a day, roughly 8% of them trucks, projected to reach 70 by 2043. The structure is 76 ft (23.2 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesGreen Lake Road
CrossesSwiftwater Bayou
LocationSec 32 T17N R 7W
RouteCounty Highway 937
CountyWashington County
StateMississippi
Coordinates33.2765, -90.94122
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum 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 width32 ft (9.7 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic70 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$650,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Green Lake Road over Swiftwater Bayou built?

It was built in 1986, making it 39 years old in 2025. It was reconstructed in 2009.

What condition is Green Lake Road over Swiftwater Bayou 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 Green Lake Road over Swiftwater Bayou carry?

About 50 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Green Lake Road over Swiftwater Bayou?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 32 ft wide.

Who owns Green Lake Road over Swiftwater Bayou?

It is owned by the County Highway Agency.