US Bridges

N Porter RD over Draw

Good

Montgomery County, Texas · 0.3 MI NW of SH 105 · Structure no. 121700C00923050

Built
2021
4 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Porter RD over Draw is a steel stringer/multi-beam or girder carrying N Porter RD over Draw in Montgomery County, Texas. It was built in 2021, so it is 4 years old, younger 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 500 vehicles a day, roughly 18% of them trucks, projected to reach 1,000 by 2042. The structure is 73 ft (22.3 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN Porter RD
CrossesDraw
Location0.3 MI NW of SH 105
RouteCity Street 0
StateTexas
Coordinates30.32026, -95.44022
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length73 ft (22.3 m)
Longest span73 ft (22.3 m)
Deck width60 ft (18.2 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic1,000 by 2042
Trucks18%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 N Porter RD over Draw built?

It was built in 2021, making it 4 years old in 2025.

What condition is N Porter RD over Draw 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 2024.

How much traffic does N Porter RD over Draw carry?

About 500 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is N Porter RD over Draw?

The structure is 73 ft (22.3 m) long with a longest span of 73 ft (22.3 m) and a deck 60 ft wide.

Who owns N Porter RD over Draw?

It is owned by the City or Municipal Highway Agency.