US Bridges

CR 13 over Moccasin Branch

Fair

St. Johns County, Florida · 0.6 MI South of CR 13A · Structure no. 784013

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
61 ft
4 main spans
Daily traffic
2,000
2024 count
Owner
County
County Highway Agency

About this bridge

CR 13 over Moccasin Branch is a concrete culvert carrying CR 13 over Moccasin Branch in St. Johns County, Florida. It was built in 1971, so it is 54 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 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 2,000 vehicles a day, roughly 2% of them trucks, projected to reach 3,470 by 2046. The structure is 61 ft (18.5 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCR 13
CrossesMoccasin Branch
Location0.6 MI South of CR 13A
RouteCounty Highway 13
CountySt. Johns County
StateFlorida
Coordinates29.77217, -81.48039
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.2 US tons
Inventory rating48.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length61 ft (18.5 m)
Longest span15 ft (4.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2024)
Projected traffic3,470 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 13 over Moccasin Branch built?

It was built in 1971, making it 54 years old in 2025.

What condition is CR 13 over Moccasin 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 CR 13 over Moccasin Branch carry?

About 2,000 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is CR 13 over Moccasin Branch?

The structure is 61 ft (18.5 m) long with a longest span of 15 ft (4.7 m).

Who owns CR 13 over Moccasin Branch?

It is owned by the County Highway Agency.