US Bridges

FM 865 over Hickory Slough

Good

Brazoria County, Texas · 1.32 MI S of Harris C/L · Structure no. 120200097602487

Built
2010
15 years old
Condition
Good
inspected December 2024
Type
Slab
Prestressed Concrete
Length
96 ft
3 main spans
Daily traffic
23,779
2020 count
Owner
State
State Highway Agency

About this bridge

FM 865 over Hickory Slough is a prestressed concrete slab carrying FM 865 over Hickory Slough in Brazoria County, Texas. It was built in 2010, so it is 15 years old, younger than the Texas average of 44.4 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 23,779 vehicles a day, roughly 11% of them trucks, projected to reach 25,790 by 2033. The structure is 96 ft (29.3 m) long and 74 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM 865
CrossesHickory Slough
Location1.32 MI S of Harris C/L
RouteState Highway 865
StateTexas
Coordinates29.56631, -95.35058
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length96 ft (29.3 m)
Longest span40 ft (12.2 m)
Deck width74 ft (22.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,779 (2020)
Projected traffic25,790 by 2033
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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 FM 865 over Hickory Slough built?

It was built in 2010, making it 15 years old in 2025.

What condition is FM 865 over Hickory Slough 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 December 2024.

How much traffic does FM 865 over Hickory Slough carry?

About 23,779 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is FM 865 over Hickory Slough?

The structure is 96 ft (29.3 m) long with a longest span of 40 ft (12.2 m) and a deck 74 ft wide.

Who owns FM 865 over Hickory Slough?

It is owned by the State Highway Agency.