US Bridges

Murphy Hill RD over Banyon Swamp Branch

FairPosted for load

Madison County, Alabama · 0.3 MI N CO RD 137 · Structure no. 001499

Built
1936
89 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
2,967
2002 count
Owner
County
County Highway Agency

About this bridge

Murphy Hill RD over Banyon Swamp Branch is a steel stringer/multi-beam or girder carrying Murphy Hill RD over Banyon Swamp Branch in Madison County, Alabama. It was built in 1936, so it is 89 years old, older 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 2,967 vehicles a day, roughly 1% of them trucks, projected to reach 3,560 by 2034. The structure is 30 ft (9.1 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMurphy Hill RD
CrossesBanyon Swamp Branch
Location0.3 MI N CO RD 137
RouteCounty Highway 138
CountyMadison County
StateAlabama
Coordinates34.90655, -86.63394
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating26.3 US tons
Inventory rating13.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,967 (2002)
Projected traffic3,560 by 2034
Trucks1%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$310,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Murphy Hill RD over Banyon Swamp Branch built?

It was built in 1936, making it 89 years old in 2025.

What condition is Murphy Hill RD over Banyon Swamp Branch 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 2024.

How much traffic does Murphy Hill RD over Banyon Swamp Branch carry?

About 2,967 vehicles per day (2002 count), of which roughly 1% are trucks.

How long is Murphy Hill RD over Banyon Swamp Branch?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns Murphy Hill RD over Banyon Swamp Branch?

It is owned by the County Highway Agency.