US Bridges

SH 87 over Patroon Bayou

Fair

Shelby County, Texas · 0.25 MI N of FM 1279 · Structure no. 112100030401080

Built
1978
47 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
280 ft
7 main spans
Daily traffic
838
2020 count
Owner
State
State Highway Agency

About this bridge

SH 87 over Patroon Bayou is a concrete stringer/multi-beam or girder carrying SH 87 over Patroon Bayou in Shelby County, Texas. It was built in 1978, so it is 47 years old, older than the Texas average of 44.4 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 838 vehicles a day, roughly 17% of them trucks, projected to reach 1,173 by 2040. The structure is 280 ft (85.3 m) long and 38 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSH 87
CrossesPatroon Bayou
Location0.25 MI N of FM 1279
RouteState Highway 87
CountyShelby County
StateTexas
Coordinates31.61748, -93.98373
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length280 ft (85.3 m)
Longest span40 ft (12.2 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic838 (2020)
Projected traffic1,173 by 2040
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 87 over Patroon Bayou built?

It was built in 1978, making it 47 years old in 2025.

What condition is SH 87 over Patroon Bayou 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 April 2024.

How much traffic does SH 87 over Patroon Bayou carry?

About 838 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is SH 87 over Patroon Bayou?

The structure is 280 ft (85.3 m) long with a longest span of 40 ft (12.2 m) and a deck 38 ft wide.

Who owns SH 87 over Patroon Bayou?

It is owned by the State Highway Agency.