US Bridges

Forest Ave over Keegans Bayou

Good

Harrison County, Mississippi · Sec 26 T 7S R 9W · Structure no. SA2400000000083

Built
1990
35 years old
Condition
Good
inspected October 2023
Type
Channel Beam
Concrete
Length
38 ft
2 main spans
Daily traffic
4,500
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Forest Ave over Keegans Bayou is a concrete channel beam carrying Forest Ave over Keegans Bayou in Harrison County, Mississippi. It was built in 1990, so it is 35 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 4,500 vehicles a day, roughly 8% of them trucks, projected to reach 6,600 by 2032. The structure is 38 ft (11.6 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesForest Ave
CrossesKeegans Bayou
LocationSec 26 T 7S R 9W
RouteCity Street 177
Coordinates30.4025, -88.90361
Functional classUrban Collector

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 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 evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.2 US tons
Inventory rating39.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width46 ft (14 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2011)
Projected traffic6,600 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Forest Ave over Keegans Bayou built?

It was built in 1990, making it 35 years old in 2025.

What condition is Forest Ave over Keegans Bayou 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 October 2023.

How much traffic does Forest Ave over Keegans Bayou carry?

About 4,500 vehicles per day (2011 count), of which roughly 8% are trucks.

How long is Forest Ave over Keegans Bayou?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 46 ft wide.

Who owns Forest Ave over Keegans Bayou?

It is owned by the City or Municipal Highway Agency.