US Bridges

SR-173 MP 3.370 over Blackwood Creek

Good

Henry County, Alabama · 1 M. N. Henry Co. 16 · Structure no. 020220

Built
2018
7 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
295 ft
1 main span
Daily traffic
680
2013 count
Owner
State
State Highway Agency

About this bridge

SR-173 MP 3.370 over Blackwood Creek is a prestressed concrete stringer/multi-beam or girder carrying SR-173 MP 3.370 over Blackwood Creek in Henry County, Alabama. It was built in 2018, so it is 7 years old, younger than the Alabama average of 51.1 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 680 vehicles a day, roughly 7% of them trucks, projected to reach 848 by 2033. The structure is 295 ft (89.9 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR-173 MP 3.370
CrossesBlackwood Creek
Location1 M. N. Henry Co. 16
RouteState Highway 173
CountyHenry County
StateAlabama
Coordinates31.37708, -85.3649
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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating42.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length295 ft (89.9 m)
Longest span135 ft (41.1 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic680 (2013)
Projected traffic848 by 2033
Trucks7%
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

OwnerState Highway Agency
Maintained byState 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$3.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-173 MP 3.370 over Blackwood Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is SR-173 MP 3.370 over Blackwood Creek 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 January 2025.

How much traffic does SR-173 MP 3.370 over Blackwood Creek carry?

About 680 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is SR-173 MP 3.370 over Blackwood Creek?

The structure is 295 ft (89.9 m) long with a longest span of 135 ft (41.1 m) and a deck 47 ft wide.

Who owns SR-173 MP 3.370 over Blackwood Creek?

It is owned by the State Highway Agency.