US Bridges

Fairmont Pkwy EB over Big Island Slough

Fair

Harris County, Texas · 0.7 MI E of Underwood RD · Structure no. 121020AA0144005

Built
1993
32 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
165 ft
3 main spans
Daily traffic
21,750
2009 count
Owner
County
County Highway Agency

About this bridge

Fairmont Pkwy EB over Big Island Slough is a prestressed concrete box beam or girders - multiple carrying Fairmont Pkwy EB over Big Island Slough in Harris County, Texas. It was built in 1993, so it is 32 years old, younger 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 21,750 vehicles a day, projected to reach 25,000 by 2028. The structure is 165 ft (50.3 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFairmont Pkwy EB
CrossesBig Island Slough
Location0.7 MI E of Underwood RD
RouteCounty Highway 19
CountyHarris County
StateTexas
Coordinates29.6517, -95.07574
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length165 ft (50.3 m)
Longest span55 ft (16.8 m)
Deck width37 ft (11.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,750 (2009)
Projected traffic25,000 by 2028
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$115,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fairmont Pkwy EB over Big Island Slough built?

It was built in 1993, making it 32 years old in 2025.

What condition is Fairmont Pkwy EB over Big Island 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 September 2023.

How much traffic does Fairmont Pkwy EB over Big Island Slough carry?

About 21,750 vehicles per day (2009 count).

How long is Fairmont Pkwy EB over Big Island Slough?

The structure is 165 ft (50.3 m) long with a longest span of 55 ft (16.8 m) and a deck 37 ft wide.

Who owns Fairmont Pkwy EB over Big Island Slough?

It is owned by the County Highway Agency.