US Bridges

Highland Blvd over Spanish Bayou

Fair

Adams County, Mississippi · Sec 3 T 6N R 3W B · Structure no. SA0100000000041

Built
1976
49 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
160 ft
4 main spans
Daily traffic
6,900
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Highland Blvd over Spanish Bayou is a prestressed concrete stringer/multi-beam or girder carrying Highland Blvd over Spanish Bayou in Adams County, Mississippi. It was built in 1976, so it is 49 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 6,900 vehicles a day, roughly 10% of them trucks, projected to reach 10,350 by 2044. The structure is 160 ft (48.8 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesHighland Blvd
CrossesSpanish Bayou
LocationSec 3 T 6N R 3W B
RouteCounty Highway 410
Coordinates31.52132, -91.39458
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.9 US tons
Inventory rating37.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2024)
Projected traffic10,350 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$448,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Highland Blvd over Spanish Bayou built?

It was built in 1976, making it 49 years old in 2025.

What condition is Highland Blvd over Spanish 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 April 2024.

How much traffic does Highland Blvd over Spanish Bayou carry?

About 6,900 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Highland Blvd over Spanish Bayou?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns Highland Blvd over Spanish Bayou?

It is owned by the City or Municipal Highway Agency.