US Bridges

Northbay Drive over Hearn Creek

Good

Madison County, Mississippi · Sec 15 T 7N R 2E · Structure no. SA4500000000006

Built
1989
36 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
500
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Northbay Drive over Hearn Creek is a prestressed concrete stringer/multi-beam or girder carrying Northbay Drive over Hearn Creek in Madison County, Mississippi. It was built in 1989, so it is 36 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 500 vehicles a day, roughly 8% of them trucks, projected to reach 750 by 2035. The structure is 40 ft (12.2 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNorthbay Drive
CrossesHearn Creek
LocationSec 15 T 7N R 2E
RouteCity Street 1171
CountyMadison County
StateMississippi
Coordinates32.45444, -90.07722
Functional classUrban Local

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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width37 ft (11.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2015)
Projected traffic750 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$248,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Northbay Drive over Hearn Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Northbay Drive over Hearn Creek 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 February 2023.

How much traffic does Northbay Drive over Hearn Creek carry?

About 500 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Northbay Drive over Hearn Creek?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 37 ft wide.

Who owns Northbay Drive over Hearn Creek?

It is owned by the City or Municipal Highway Agency.