US Bridges

Beach Road over Calley Slough

Fair

Monroe County, Florida · US-1 Mm 102 · Structure no. 900801

Built
1967
58 years old, rebuilt 1978
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
86 ft
5 main spans
Daily traffic
1,869
2020 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Beach Road over Calley Slough is a wood or timber stringer/multi-beam or girder carrying Beach Road over Calley Slough in Monroe County, Florida. It was built in 1967 and reconstructed in 1978, so it is 58 years old, older 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 5 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 1,869 vehicles a day, projected to reach 3,747 by 2042. The structure is 86 ft (26.2 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesBeach Road
CrossesCalley Slough
LocationUS-1 Mm 102
RouteState Lands Road 1
CountyMonroe County
StateFlorida
Coordinates25.12463, -80.40539
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.7 US tons
Inventory rating33.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadH 15
Structure length86 ft (26.2 m)
Longest span17 ft (5.2 m)
Deck width27 ft (8.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,869 (2020)
Projected traffic3,747 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a toll road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Beach Road over Calley Slough built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1978.

What condition is Beach Road over Calley Slough 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 March 2023.

How much traffic does Beach Road over Calley Slough carry?

About 1,869 vehicles per day (2020 count).

How long is Beach Road over Calley Slough?

The structure is 86 ft (26.2 m) long with a longest span of 17 ft (5.2 m) and a deck 27 ft wide.

Who owns Beach Road over Calley Slough?

It is owned by the State Park, Forest, or Reservation Agency.