US Bridges

SR173 over Bayou Marcus

Fair

Escambia County, Florida · 0.9 Miles N of SR298 · Structure no. 480167

Built
1984
41 years old
Condition
Fair
inspected May 2024
Type
Slab
Prestressed Concrete
Length
160 ft
5 main spans
Daily traffic
25,500
2022 count
Owner
State
State Highway Agency

About this bridge

SR173 over Bayou Marcus is a prestressed concrete slab carrying SR173 over Bayou Marcus in Escambia County, Florida. It was built in 1984, so it is 41 years old, younger than the Florida average of 41.3 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.

It carries about 25,500 vehicles a day, roughly 6% of them trucks, projected to reach 44,242 by 2044. The structure is 160 ft (48.8 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR173
CrossesBayou Marcus
Location0.9 Miles N of SR298
RouteState Highway 173
CountyEscambia County
StateFlorida
Coordinates30.43381, -87.32404
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.1 US tons
Inventory rating42.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span32 ft (9.8 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,500 (2022)
Projected traffic44,242 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR173 over Bayou Marcus built?

It was built in 1984, making it 41 years old in 2025.

What condition is SR173 over Bayou Marcus 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 May 2024.

How much traffic does SR173 over Bayou Marcus carry?

About 25,500 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR173 over Bayou Marcus?

The structure is 160 ft (48.8 m) long with a longest span of 32 ft (9.8 m) and a deck 47 ft wide.

Who owns SR173 over Bayou Marcus?

It is owned by the State Highway Agency.