US Bridges

Morgan Road over Mill Branch

Good

Amite County, Mississippi · Sec 21 T 1N R 3E · Structure no. SA0300000000014

Built
1997
28 years old
Condition
Good
inspected March 2023
Type
Channel Beam
Concrete
Length
93 ft
3 main spans
Daily traffic
75
2021 count
Owner
County
County Highway Agency

About this bridge

Morgan Road over Mill Branch is a concrete channel beam carrying Morgan Road over Mill Branch in Amite County, Mississippi. It was built in 1997, so it is 28 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, projected to reach 113 by 2043. The structure is 93 ft (28.3 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMorgan Road
CrossesMill Branch
LocationSec 21 T 1N R 3E
RouteCounty Highway 66
Coordinates31.05694, -90.87411
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80.7 US tons
Inventory rating48.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length93 ft (28.3 m)
Longest span31 ft (9.4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2021)
Projected traffic113 by 2043
Trucks—
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

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 Morgan Road over Mill Branch built?

It was built in 1997, making it 28 years old in 2025.

What condition is Morgan Road over Mill 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 March 2023.

How much traffic does Morgan Road over Mill Branch carry?

About 75 vehicles per day (2021 count).

How long is Morgan Road over Mill Branch?

The structure is 93 ft (28.3 m) long with a longest span of 31 ft (9.4 m) and a deck 25 ft wide.

Who owns Morgan Road over Mill Branch?

It is owned by the County Highway Agency.