US Bridges

Rockhill-Brooklyn over Granny Creek

FairPosted for load

Forrest County, Mississippi · Sec 7 T 1N R12W B · Structure no. SA1800000000003

Built
1977
48 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
220
2025 count
Owner
County
County Highway Agency

About this bridge

Rockhill-Brooklyn over Granny Creek is a concrete slab carrying Rockhill-Brooklyn over Granny Creek in Forrest County, Mississippi. It was built in 1977, so it is 48 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. Its operating status is: posted for load restriction.

It carries about 220 vehicles a day, roughly 8% of them trucks, projected to reach 270 by 2045. The structure is 95 ft (29 m) long and 30 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesRockhill-Brooklyn
CrossesGranny Creek
LocationSec 7 T 1N R12W B
RouteCounty Highway 1155
CountyForrest County
StateMississippi
Coordinates31.05878, -89.2421
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.3 US tons
Inventory rating15.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width30 ft (9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2025)
Projected traffic270 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$485,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rockhill-Brooklyn over Granny Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Rockhill-Brooklyn over Granny Creek 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 November 2024.

How much traffic does Rockhill-Brooklyn over Granny Creek carry?

About 220 vehicles per day (2025 count), of which roughly 8% are trucks.

How long is Rockhill-Brooklyn over Granny Creek?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 30 ft wide.

Who owns Rockhill-Brooklyn over Granny Creek?

It is owned by the County Highway Agency.