US Bridges

Harper Road over Mill Creek

FairPosted for load

Tuscaloosa County, Alabama · 3.1 MI NW of JCT Ala N 43 · Structure no. 014727

Built
1959
66 years old, rebuilt 1989
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
45 ft
3 main spans
Daily traffic
132
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Harper Road over Mill Creek is a wood or timber stringer/multi-beam or girder carrying Harper Road over Mill Creek in Tuscaloosa County, Alabama. It was built in 1959 and reconstructed in 1989, so it is 66 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 5 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 132 vehicles a day, roughly 1% of them trucks, projected to reach 156 by 2032. The structure is 45 ft (13.7 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesHarper Road
CrossesMill Creek
Location3.1 MI NW of JCT Ala N 43
RouteCounty Highway 122
StateAlabama
Coordinates33.27468, -87.63145
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating18.8 US tons
Inventory rating13.6 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span15 ft (4.6 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic132 (2010)
Projected traffic156 by 2032
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$246,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Harper Road over Mill Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1989.

What condition is Harper Road over Mill 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 January 2024.

How much traffic does Harper Road over Mill Creek carry?

About 132 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Harper Road over Mill Creek?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 16 ft wide.

Who owns Harper Road over Mill Creek?

It is owned by the City or Municipal Highway Agency.