US Bridges

Snwdn-Chambers Rd. over Drainage Relief

FairPosted for load

Montgomery County, Alabama · 2.8 Mile East CO RD61 · Structure no. 012994

Built
1983
42 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Concrete
Length
152 ft
6 main spans
Daily traffic
400
1989 count
Owner
County
County Highway Agency

About this bridge

Snwdn-Chambers Rd. over Drainage Relief is a concrete channel beam carrying Snwdn-Chambers Rd. over Drainage Relief in Montgomery County, Alabama. It was built in 1983, so it is 42 years old, younger than the Alabama average of 51.1 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 400 vehicles a day, roughly 1% of them trucks, projected to reach 600 by 2044. The structure is 152 ft (46.3 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSnwdn-Chambers Rd.
CrossesDrainage Relief
Location2.8 Mile East CO RD61
RouteCounty Highway 31
CountyMontgomery County
StateAlabama
Coordinates32.24906, -86.2469
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.4 US tons
Inventory rating23.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadH 15
Structure length152 ft (46.3 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (1989)
Projected traffic600 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Snwdn-Chambers Rd. over Drainage Relief built?

It was built in 1983, making it 42 years old in 2025.

What condition is Snwdn-Chambers Rd. over Drainage Relief 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 October 2023.

How much traffic does Snwdn-Chambers Rd. over Drainage Relief carry?

About 400 vehicles per day (1989 count), of which roughly 1% are trucks.

How long is Snwdn-Chambers Rd. over Drainage Relief?

The structure is 152 ft (46.3 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Snwdn-Chambers Rd. over Drainage Relief?

It is owned by the County Highway Agency.