US Bridges

SP 5 Nbfr over IH 45 Nbfr

Good

Harris County, Texas · 1.70 MI SE of US 59 · Structure no. 121020050003175

Built
1976
49 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
4,000
2012 count
Owner
State
State Highway Agency

About this bridge

SP 5 Nbfr over IH 45 Nbfr is a prestressed concrete stringer/multi-beam or girder carrying SP 5 Nbfr over IH 45 Nbfr in Harris County, Texas. It was built in 1976, so it is 49 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 4,000 vehicles a day, roughly 7% of them trucks, projected to reach 20,300 by 2031. The structure is 78 ft (23.8 m) long and 36 ft wide.

Location

Open in Google Maps
CarriesSP 5 Nbfr
CrossesIH 45 Nbfr
Location1.70 MI SE of US 59
RouteState Highway 5
CountyHarris County
StateTexas
Coordinates29.73014, -95.33841
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span78 ft (23.8 m)
Deck width36 ft (11 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2012)
Projected traffic20,300 by 2031
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$5,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SP 5 Nbfr over IH 45 Nbfr built?

It was built in 1976, making it 49 years old in 2025.

What condition is SP 5 Nbfr 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 October 2022.

How much traffic does SP 5 Nbfr over IH 45 Nbfr carry?

About 4,000 vehicles per day (2012 count), of which roughly 7% are trucks.

How long is SP 5 Nbfr over IH 45 Nbfr?

The structure is 78 ft (23.8 m) long with a longest span of 78 ft (23.8 m) and a deck 36 ft wide.

Who owns SP 5 Nbfr over IH 45 Nbfr?

It is owned by the State Highway Agency.