US Bridges

Griggs RD over US 90A (ost)

Fair

Harris County, Texas · 1.4 MI E of SH 288 · Structure no. 121020002710074

Built
1960
65 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
72 ft
2 main spans
Daily traffic
8,307
2021 count
Owner
State
State Highway Agency

About this bridge

Griggs RD over US 90A (ost) is a concrete continuous slab carrying Griggs RD over US 90A (ost) in Harris County, Texas. It was built in 1960, so it is 65 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 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 8,307 vehicles a day, roughly 3% of them trucks, projected to reach 11,630 by 2041. The structure is 72 ft (21.9 m) long and 260 ft wide.

Location

Open in Google Maps
CarriesGriggs RD
CrossesUS 90A (ost)
Location1.4 MI E of SH 288
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.70287, -95.35192
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span36 ft (11 m)
Deck width260 ft (79.2 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,307 (2021)
Projected traffic11,630 by 2041
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Griggs RD over US 90A (ost) built?

It was built in 1960, making it 65 years old in 2025.

What condition is Griggs RD over US 90A (ost) 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 Griggs RD over US 90A (ost) carry?

About 8,307 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Griggs RD over US 90A (ost)?

The structure is 72 ft (21.9 m) long with a longest span of 36 ft (11 m) and a deck 260 ft wide.

Who owns Griggs RD over US 90A (ost)?

It is owned by the State Highway Agency.