US Bridges

Old Kiln Road over Blacksnake Br

Good

Pearl River County, Mississippi · Sec 15 T 6S R16W B · Structure no. SA5500000000142

Built
2007
18 years old
Condition
Good
inspected April 2024
Type
Channel Beam
Concrete
Length
76 ft
4 main spans
Daily traffic
1,900
2024 count
Owner
County
County Highway Agency

About this bridge

Old Kiln Road over Blacksnake Br is a concrete channel beam carrying Old Kiln Road over Blacksnake Br in Pearl River County, Mississippi. It was built in 2007, so it is 18 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 1,900 vehicles a day, roughly 8% of them trucks, projected to reach 2,140 by 2046. The structure is 76 ft (23.2 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesOld Kiln Road
CrossesBlacksnake Br
LocationSec 15 T 6S R16W B
RouteCounty Highway 1120
Coordinates30.52476, -89.58405
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.4 US tons
Inventory rating59.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2024)
Projected traffic2,140 by 2046
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$135,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Kiln Road over Blacksnake Br built?

It was built in 2007, making it 18 years old in 2025.

What condition is Old Kiln Road over Blacksnake Br 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 April 2024.

How much traffic does Old Kiln Road over Blacksnake Br carry?

About 1,900 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Old Kiln Road over Blacksnake Br?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Old Kiln Road over Blacksnake Br?

It is owned by the County Highway Agency.