US Bridges

Simpson Road over Bch of Spring Branch

Good

Madison County, Mississippi · Sec 36 T11N R 3E · Structure no. SA450000000A144

Built
2022
3 years old
Condition
Good
inspected May 2023
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
20
2015 count
Owner
County
County Highway Agency

About this bridge

Simpson Road over Bch of Spring Branch is a concrete channel beam carrying Simpson Road over Bch of Spring Branch in Madison County, Mississippi. It was built in 2022, so it is 3 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 20 vehicles a day, projected to reach 30 by 2035. The structure is 57 ft (17.3 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSimpson Road
CrossesBch of Spring Branch
LocationSec 36 T11N R 3E
RouteCounty Highway 12
CountyMadison County
StateMississippi
Coordinates32.84953, -89.93629
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length57 ft (17.3 m)
Longest span19 ft (5.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2015)
Projected traffic30 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Simpson Road over Bch of Spring Branch built?

It was built in 2022, making it 3 years old in 2025.

What condition is Simpson Road over Bch of Spring Branch 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 May 2023.

How much traffic does Simpson Road over Bch of Spring Branch carry?

About 20 vehicles per day (2015 count).

How long is Simpson Road over Bch of Spring Branch?

The structure is 57 ft (17.3 m) long with a longest span of 19 ft (5.7 m) and a deck 28 ft wide.

Who owns Simpson Road over Bch of Spring Branch?

It is owned by the County Highway Agency.