US Bridges

Thornton RD over Bch of Murphy Creek

Good

Hinds County, Mississippi · Sec 8 T 3N R 4W · Structure no. SA2500000000416

Built
2011
14 years old
Condition
Good
inspected May 2024
Type
Channel Beam
Concrete
Length
69 ft
3 main spans
Daily traffic
280
2023 count
Owner
County
County Highway Agency

About this bridge

Thornton RD over Bch of Murphy Creek is a concrete channel beam carrying Thornton RD over Bch of Murphy Creek in Hinds County, Mississippi. It was built in 2011, so it is 14 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 280 vehicles a day, roughly 8% of them trucks, projected to reach 420 by 2043. The structure is 69 ft (21 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesThornton RD
CrossesBch of Murphy Creek
LocationSec 8 T 3N R 4W
RouteCounty Highway 5322
Coordinates32.123, -90.63828
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length69 ft (21 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic280 (2023)
Projected traffic420 by 2043
Trucks8%
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

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 Thornton RD over Bch of Murphy Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Thornton RD over Bch of Murphy 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 May 2024.

How much traffic does Thornton RD over Bch of Murphy Creek carry?

About 280 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Thornton RD over Bch of Murphy Creek?

The structure is 69 ft (21 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns Thornton RD over Bch of Murphy Creek?

It is owned by the County Highway Agency.