US Bridges

LA1077 over Savannah Branch

Fair

St. Tammany Parish, Louisiana · LA1077 · Structure no. 625208520601091

Built
1957
68 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
883
2021 count
Owner
State
State Highway Agency

About this bridge

LA1077 over Savannah Branch is a concrete slab carrying LA1077 over Savannah Branch in St. Tammany Parish, Louisiana. It was built in 1957, so it is 68 years old, older than the Louisiana average of 43 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 883 vehicles a day, roughly 13% of them trucks, projected to reach 971 by 2041. The structure is 140 ft (42.7 m) long and 29 ft wide.

Location

Open in Google Maps
CarriesLA1077
CrossesSavannah Branch
LocationLA1077
RouteState Highway 1077
CountySt. Tammany Parish
StateLouisiana
Coordinates30.5797, -90.2278
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic883 (2021)
Projected traffic971 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$663,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA1077 over Savannah Branch built?

It was built in 1957, making it 68 years old in 2025.

What condition is LA1077 over Savannah Branch 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 September 2023.

How much traffic does LA1077 over Savannah Branch carry?

About 883 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA1077 over Savannah Branch?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA1077 over Savannah Branch?

It is owned by the State Highway Agency.