US Bridges

Griggs RD over IH 45 Nbfr

Good

Harris County, Texas · 0.75 MI SE of US 90A · Structure no. 121020050003183

Built
1977
48 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
8,430
2009 count
Owner
State
State Highway Agency

About this bridge

Griggs RD over IH 45 Nbfr is a prestressed concrete slab carrying Griggs RD over IH 45 Nbfr in Harris County, Texas. It was built in 1977, so it is 48 years old, older 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 8,430 vehicles a day, projected to reach 12,000 by 2029. The structure is 49 ft (14.9 m) long and 88 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGriggs RD
CrossesIH 45 Nbfr
Location0.75 MI SE of US 90A
RouteCity Street 0
StateTexas
Coordinates29.70859, -95.30494
Functional classUrban Collector

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.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length49 ft (14.9 m)
Longest span49 ft (14.9 m)
Deck width88 ft (26.9 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,430 (2009)
Projected traffic12,000 by 2029
Trucks0%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$8,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Griggs RD over IH 45 Nbfr built?

It was built in 1977, making it 48 years old in 2025.

What condition is Griggs RD over IH 45 Nbfr 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 September 2024.

How much traffic does Griggs RD over IH 45 Nbfr carry?

About 8,430 vehicles per day (2009 count).

How long is Griggs RD over IH 45 Nbfr?

The structure is 49 ft (14.9 m) long with a longest span of 49 ft (14.9 m) and a deck 88 ft wide.

Who owns Griggs RD over IH 45 Nbfr?

It is owned by the State Highway Agency.